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Page 1
Curriculum Aligned
Competency Based Test Items
Science
Class - 9
Central Board of Secondary Education
Competency Based Test Items
Science
Class - 9
Central Board of Secondary Education
Page 5
Table of Contents
Test Item
1 Matter in Our Surroundings ................................................................................................03
2 Is Matter Around Us Pure? ..................................................................................................08
3 Atoms and Molecules .........................................................................................................12
4 Structure of the Atom ..........................................................................................................15
5 The Fundamental Unit of Life ............................................................................................18
6 Tissues .................................................................................................................................22
7 Diversity in Living Organisms ............................................................................................26
8 Motion .................................................................................................................................30
9 Force and Laws of Motion ..................................................................................................34
10 Gravitation ..........................................................................................................................37
11 Work and Energy .................................................................................................................42
12 Sound ..................................................................................................................................46
13 Why Do We Fall Ill? ...........................................................................................................50
14 Natural Resources ...............................................................................................................53
15 Improvement in Food Resources ........................................................................................57
Scoring Key
1 Matter in Our Surroundings ................................................................................................61
2 Is Matter Around Us Pure? ..................................................................................................65
3 Atoms and Molecules .........................................................................................................68
4 Structure of the Atom ..........................................................................................................71
5 The Fundamental Unit of Life ............................................................................................74
6 Tissues .................................................................................................................................78
7 Diversity in Living Organisms ............................................................................................81
8 Motion .................................................................................................................................85
9 Force and Laws of Motion ..................................................................................................89
10 Gravitation ..........................................................................................................................92
11 Work and Energy .................................................................................................................96
12 Sound ..................................................................................................................................99
13 Why Do We Fall Ill?...........................................................................................................102
14 Natural Resources...............................................................................................................105
15 Improvement in Food Resources........................................................................................108
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 02
Test Item
1 Matter in Our Surroundings ................................................................................................03
2 Is Matter Around Us Pure? ..................................................................................................08
3 Atoms and Molecules .........................................................................................................12
4 Structure of the Atom ..........................................................................................................15
5 The Fundamental Unit of Life ............................................................................................18
6 Tissues .................................................................................................................................22
7 Diversity in Living Organisms ............................................................................................26
8 Motion .................................................................................................................................30
9 Force and Laws of Motion ..................................................................................................34
10 Gravitation ..........................................................................................................................37
11 Work and Energy .................................................................................................................42
12 Sound ..................................................................................................................................46
13 Why Do We Fall Ill? ...........................................................................................................50
14 Natural Resources ...............................................................................................................53
15 Improvement in Food Resources ........................................................................................57
Scoring Key
1 Matter in Our Surroundings ................................................................................................61
2 Is Matter Around Us Pure? ..................................................................................................65
3 Atoms and Molecules .........................................................................................................68
4 Structure of the Atom ..........................................................................................................71
5 The Fundamental Unit of Life ............................................................................................74
6 Tissues .................................................................................................................................78
7 Diversity in Living Organisms ............................................................................................81
8 Motion .................................................................................................................................85
9 Force and Laws of Motion ..................................................................................................89
10 Gravitation ..........................................................................................................................92
11 Work and Energy .................................................................................................................96
12 Sound ..................................................................................................................................99
13 Why Do We Fall Ill?...........................................................................................................102
14 Natural Resources...............................................................................................................105
15 Improvement in Food Resources........................................................................................108
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 02
Page 6
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 1
Matter in Our Surroundings
Masood wanted to ind out which state of a substance dissolves faster in water.
He illed two similar glass jars with the same amount of water.
Masood added the following substances to the jars of water.
• 10 g of copper sulphate crystal to Jar 1.
• 10 mL of 75% copper sulphate solution to Jar 2.
The table below shows the colour of the water in each jar after speci ic time periods.
SAS21S090101
1 Which statement can be concluded from Masood’s activity?
A. Crystals dissolve partially in water.
B. Liquids dissolve faster than solids in water.
C. Copper sulphate dissolves faster in water than in any other liquid.
D. Particles of a liquid have a stronger force of attraction than that of a solid.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 03
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 1
Matter in Our Surroundings
Masood wanted to ind out which state of a substance dissolves faster in water.
He illed two similar glass jars with the same amount of water.
Masood added the following substances to the jars of water.
• 10 g of copper sulphate crystal to Jar 1.
• 10 mL of 75% copper sulphate solution to Jar 2.
The table below shows the colour of the water in each jar after speci ic time periods.
SAS21S090101
1 Which statement can be concluded from Masood’s activity?
A. Crystals dissolve partially in water.
B. Liquids dissolve faster than solids in water.
C. Copper sulphate dissolves faster in water than in any other liquid.
D. Particles of a liquid have a stronger force of attraction than that of a solid.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 03
Page 7
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 1
SAS21S090102
2 Why did Masood use the same amount of water in each jar?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Masood took 10 mL of the coloured water from Jar 2 and poured it into 100 mL of plain water in Jar
X.
He then took 10 mL of the mixture from jar X and poured it into 100 mL of plain water in Jar Y.
10 ml 10 ml
100 ml 100 ml
Jar 2 Jar X Jar Y
He mixed the liquids in jars X and Y.
SAS21S090103
3 What would be the likely colour of the liquids in Jar X and Jar Y respectively?
colour of liquid in Jar X colour of liquid in Jar Y
A.
B.
C.
D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 04
Class 9 – Chapter 1
SAS21S090102
2 Why did Masood use the same amount of water in each jar?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Masood took 10 mL of the coloured water from Jar 2 and poured it into 100 mL of plain water in Jar
X.
He then took 10 mL of the mixture from jar X and poured it into 100 mL of plain water in Jar Y.
10 ml 10 ml
100 ml 100 ml
Jar 2 Jar X Jar Y
He mixed the liquids in jars X and Y.
SAS21S090103
3 What would be the likely colour of the liquids in Jar X and Jar Y respectively?
colour of liquid in Jar X colour of liquid in Jar Y
A.
B.
C.
D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 04
Page 8
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 1
The picture shows the arrangement of particles in three different substances.
SAS21S090104
4 Which of the following is true about the state of the three substances?
Select the correct row.
Substance 1 Substance 2 Substance 3
A. Solid Liquid Gas
B. Gas Liquid Solid
C. Liquid Gas Solid
D. Gas Solid Liquid
SAS21S090105
5 What can be done to make the particles of Substance 1 move slower?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Tina found a syringe in her science lab.
The mouth of the syringe was closed with a rubber cork.
Tina tried to press the piston of the syringe as much as possible.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 05
Class 9 – Chapter 1
The picture shows the arrangement of particles in three different substances.
SAS21S090104
4 Which of the following is true about the state of the three substances?
Select the correct row.
Substance 1 Substance 2 Substance 3
A. Solid Liquid Gas
B. Gas Liquid Solid
C. Liquid Gas Solid
D. Gas Solid Liquid
SAS21S090105
5 What can be done to make the particles of Substance 1 move slower?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Tina found a syringe in her science lab.
The mouth of the syringe was closed with a rubber cork.
Tina tried to press the piston of the syringe as much as possible.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 05
Page 9
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 1
SAS21S090106
6 Tina found that it was dif icult to press the piston as it moved deeper.
Explain the reason with reference to the change in space between the particles.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090107
7 Tina found three more syringes of the same size closed with rubber cork.
She took the piston out of each syringe and illed them with coconut oil, saw dust and cotton.
Tina closed the end of each syringe with piston.
She then tried to press the piston of each syringe as much as possible.
Arrange the syringes in increasing order of dif iculty of pressing the piston.
Key: less dif icult → more dif icult
A. Syringe 1 → Syringe 2 → Syringe 3
B. Syringe 3 → Syringe 2 → Syringe 1
C. Syringe 1 → Syringe 3 → Syringe 2
D. Syringe 2 → Syringe 3 → Syringe 1
Madhu poured 100 mL of water to each of four different glass vessels.
She kept all the four vessels under the Sun.
Madhu noted the time taken for the water in each vessel to evaporate completely.
Vessel 1 Vessel 2 Vessel 3 Vessel 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 06
Class 9 – Chapter 1
SAS21S090106
6 Tina found that it was dif icult to press the piston as it moved deeper.
Explain the reason with reference to the change in space between the particles.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090107
7 Tina found three more syringes of the same size closed with rubber cork.
She took the piston out of each syringe and illed them with coconut oil, saw dust and cotton.
Tina closed the end of each syringe with piston.
She then tried to press the piston of each syringe as much as possible.
Arrange the syringes in increasing order of dif iculty of pressing the piston.
Key: less dif icult → more dif icult
A. Syringe 1 → Syringe 2 → Syringe 3
B. Syringe 3 → Syringe 2 → Syringe 1
C. Syringe 1 → Syringe 3 → Syringe 2
D. Syringe 2 → Syringe 3 → Syringe 1
Madhu poured 100 mL of water to each of four different glass vessels.
She kept all the four vessels under the Sun.
Madhu noted the time taken for the water in each vessel to evaporate completely.
Vessel 1 Vessel 2 Vessel 3 Vessel 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 06
Page 10
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 1
SAS21S090108
8 Which of these questions can be answered based on the results of Madhu’s activity?
A. Does the rate of evaporation of a liquid depend on its open surface area?
B. Does the rate of evaporation of a liquid depend on its surrounding temperature?
C. Does the rate of evaporation of a liquid depend on the material of its container?
D. Does the rate of evaporation of a liquid depend on the amount of moisture in air?
SAS21S090109
9 Why did Madhu pour equal amount of water in each vessel?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090110
10 Cotton clothes are comfortable to wear in summers. Which feature of cotton explains why cotton is
comfortable to wear in summers?
Circle ‘Yes’ or ‘No’ for each row.
Why cotton is comfortable to wear in summers? Yes or No
Cotton has strong ibres. Yes/No
Cotton is a natural fabric. Yes/No
Cotton absorbs water and has pores. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 07
Class 9 – Chapter 1
SAS21S090108
8 Which of these questions can be answered based on the results of Madhu’s activity?
A. Does the rate of evaporation of a liquid depend on its open surface area?
B. Does the rate of evaporation of a liquid depend on its surrounding temperature?
C. Does the rate of evaporation of a liquid depend on the material of its container?
D. Does the rate of evaporation of a liquid depend on the amount of moisture in air?
SAS21S090109
9 Why did Madhu pour equal amount of water in each vessel?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090110
10 Cotton clothes are comfortable to wear in summers. Which feature of cotton explains why cotton is
comfortable to wear in summers?
Circle ‘Yes’ or ‘No’ for each row.
Why cotton is comfortable to wear in summers? Yes or No
Cotton has strong ibres. Yes/No
Cotton is a natural fabric. Yes/No
Cotton absorbs water and has pores. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 07
Page 11
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 2
Is Matter Around Us pure?
The table shows the processes required to separate different mixtures in four separate jars.
Jar 1 Jar 2 Jar 3 Jar 4
Process distillation iltration evaporation sublimation
SAS21S090201
1 Which jar contains a mixture of two solids?
A. Jar 1
B. Jar 2
C. Jar 3
D. Jar 4
SAS21S090202
2 What process does not involve heating?
A. Distillation
B. Filtration
C. Evaporation
D. Sublimation
Tina passes light beams through two liquid mixtures in separate glasses.
The picture shows Tina’s observations.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 08
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 2
Is Matter Around Us pure?
The table shows the processes required to separate different mixtures in four separate jars.
Jar 1 Jar 2 Jar 3 Jar 4
Process distillation iltration evaporation sublimation
SAS21S090201
1 Which jar contains a mixture of two solids?
A. Jar 1
B. Jar 2
C. Jar 3
D. Jar 4
SAS21S090202
2 What process does not involve heating?
A. Distillation
B. Filtration
C. Evaporation
D. Sublimation
Tina passes light beams through two liquid mixtures in separate glasses.
The picture shows Tina’s observations.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 08
Page 12
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 2
SAS21S090203
3 Based on the behaviour of the light beam what are liquids 1 and 2?
Liquid 1 Liquid 2
A. solution colloid
B. colloid suspension
C. solution suspension
D. suspension colloid
SAS21S090204
4 Which of these is true about the particles in the two liquids?
A. Particles in both liquids scatter light rays.
B. Particles in both liquids absorb light rays.
C. Particles in liquid 1 scatter light rays and particles in liquid 2 absorb light rays.
D. Particles in liquid 1 absorb light rays and particles in liquid 2 scatter light rays.
SAS21S090205
5 What are the components of a mixture that can be separated using a separating funnel?
A. Two miscible liquids
B. Two immiscible liquids
C. A gas dissolved in a liquid
D. A solid dissolved in a liquid
SAS21S090206
6 Which of these is an alloy?
A. Silver
B. Copper
C. Bronze
D. Aluminium
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 09
Class 9 – Chapter 2
SAS21S090203
3 Based on the behaviour of the light beam what are liquids 1 and 2?
Liquid 1 Liquid 2
A. solution colloid
B. colloid suspension
C. solution suspension
D. suspension colloid
SAS21S090204
4 Which of these is true about the particles in the two liquids?
A. Particles in both liquids scatter light rays.
B. Particles in both liquids absorb light rays.
C. Particles in liquid 1 scatter light rays and particles in liquid 2 absorb light rays.
D. Particles in liquid 1 absorb light rays and particles in liquid 2 scatter light rays.
SAS21S090205
5 What are the components of a mixture that can be separated using a separating funnel?
A. Two miscible liquids
B. Two immiscible liquids
C. A gas dissolved in a liquid
D. A solid dissolved in a liquid
SAS21S090206
6 Which of these is an alloy?
A. Silver
B. Copper
C. Bronze
D. Aluminium
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 09
Page 13
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 2
The low chart shows a typical water treatment system.
Water treatment system
SAS21S090207
7 What can be concluded from the low chart about the water treatment system?
A. There are two stages of iltering water.
B. Microorganisms in water are removed in the last stage.
C. Large impurities in water are removed in the last stage.
D. There are three stages for removal of suspended impurities.
SAS21S090208
8 Which of these is common for all chemical changes?
A. Change in shape
B. Absorption of heat
C. Increase in volume
D. Formation of a new substance
The table lists the properties of four substances.
Is it shiny? How does it conduct
electricity?
Substance 1 yes very good
Substance 2 no very poor
Substance 3 yes medium
Substance 4 no poor
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 10
Class 9 – Chapter 2
The low chart shows a typical water treatment system.
Water treatment system
SAS21S090207
7 What can be concluded from the low chart about the water treatment system?
A. There are two stages of iltering water.
B. Microorganisms in water are removed in the last stage.
C. Large impurities in water are removed in the last stage.
D. There are three stages for removal of suspended impurities.
SAS21S090208
8 Which of these is common for all chemical changes?
A. Change in shape
B. Absorption of heat
C. Increase in volume
D. Formation of a new substance
The table lists the properties of four substances.
Is it shiny? How does it conduct
electricity?
Substance 1 yes very good
Substance 2 no very poor
Substance 3 yes medium
Substance 4 no poor
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 10
Page 14
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 2
SAS21S090209
9 Which substance is most likely to be a metalloid?
A. Substance 1
B. Substance 2
C. Substance 3
D. Substance 4
A gas cylinder has the following symbol on its surface.
SAS21S090210
10 Which property of the gas is represented by the symbol?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 11
Class 9 – Chapter 2
SAS21S090209
9 Which substance is most likely to be a metalloid?
A. Substance 1
B. Substance 2
C. Substance 3
D. Substance 4
A gas cylinder has the following symbol on its surface.
SAS21S090210
10 Which property of the gas is represented by the symbol?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 11
Page 15
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 3
Atoms and Molecules
Alia mixed BaCl2 solution and CuSO4 solution in a closed conical lask.
SAS21S090301
1 What can concluded from the result of the experiment?
A. Total mass of the chemicals remain the same.
B. Total volume of the chemicals remain the same.
C. State of matter of the chemicals remain the same.
D. Composition of the chemicals remain the same.
SAS21S090302
2 What is the chemical name of the white residue?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 12
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 3
Atoms and Molecules
Alia mixed BaCl2 solution and CuSO4 solution in a closed conical lask.
SAS21S090301
1 What can concluded from the result of the experiment?
A. Total mass of the chemicals remain the same.
B. Total volume of the chemicals remain the same.
C. State of matter of the chemicals remain the same.
D. Composition of the chemicals remain the same.
SAS21S090302
2 What is the chemical name of the white residue?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 12
Page 16
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 3
The table lists the symbols for some common elements.
Sodium Uranium Nitrogen Zinc Chlorine
Symbol of the Na U N Zn CI
elementnce 1
SAS21S090303
3 Which of these is true for the symbols of different elements?
Circle ‘Yes’ or ‘No’ for the correct response.
Is the statement true? Yes or No
It always contains the irst letter of the element’s name. Yes/No
If it contains two letters, then the irst letter is capital and the second letter is small. Yes/No
It contains a single letter for non-metals and two letters for metals. Yes/No
The atomic mass of two elements are given below.
Oxygen = 16 u
Sulphur = 32 u
SAS21S090304
4 What is the ratio by atomic mass of Sulphur and Oxygen in So2?
A. 1:1
B. 1:2
C. 2:1
D. 1:4
SAS21S090305
5 Which of the following molecules is triatomic?
A. H2
B. C
C. CO
D. H2O
The formula and charge on ions of three different compounds are shown below.
Formula PbO2 MgCl2 Al2O3
Charge on ions Pb4+ and O2- Mg2+ and Cl- Al3+ and O2-
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 13
Class 9 – Chapter 3
The table lists the symbols for some common elements.
Sodium Uranium Nitrogen Zinc Chlorine
Symbol of the Na U N Zn CI
elementnce 1
SAS21S090303
3 Which of these is true for the symbols of different elements?
Circle ‘Yes’ or ‘No’ for the correct response.
Is the statement true? Yes or No
It always contains the irst letter of the element’s name. Yes/No
If it contains two letters, then the irst letter is capital and the second letter is small. Yes/No
It contains a single letter for non-metals and two letters for metals. Yes/No
The atomic mass of two elements are given below.
Oxygen = 16 u
Sulphur = 32 u
SAS21S090304
4 What is the ratio by atomic mass of Sulphur and Oxygen in So2?
A. 1:1
B. 1:2
C. 2:1
D. 1:4
SAS21S090305
5 Which of the following molecules is triatomic?
A. H2
B. C
C. CO
D. H2O
The formula and charge on ions of three different compounds are shown below.
Formula PbO2 MgCl2 Al2O3
Charge on ions Pb4+ and O2- Mg2+ and Cl- Al3+ and O2-
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 13
Page 17
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 3
SAS21S090306
6 Two ions, Zn2+ and S2-, combine to form a compound. What should be the formula of the compound
formed?
A. ZnS
B. Zn2S
C. ZnS2
D. Zn2S2
SAS21S090307
7 Which of these statements is true for ions? Circle ‘Yes’ or ‘No’ for the correct response.
Is the statement true? Yes or No
An ion is always a single charged atom. Yes/No
An ion of a metal is always positively charged. Yes/No
An ion of a non-metal is either positively or negatively charged Yes/No
The atomic mass of four elements are given below.
Carbon Helium Calcium Nitrogen
Atomic mass (u) 12 4 40 14
SAS21S090308
8 Molar mass is the mass of 1 mole of an element or a compound.
Which element has the highest molar mass?
A. Carbon
B. Helium
C. Calcium
D. Nitrogen
SAS21S090309
9 What is the unit for molar mass?
A. u
B. g
C. mg
D. kg SAS21S090310
10 In which of these elements is the mass of 1 mole atom equal to the mass of 1 mole molecule?
A. H₂
B. O₂
C. He
D. O₃
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 14
Class 9 – Chapter 3
SAS21S090306
6 Two ions, Zn2+ and S2-, combine to form a compound. What should be the formula of the compound
formed?
A. ZnS
B. Zn2S
C. ZnS2
D. Zn2S2
SAS21S090307
7 Which of these statements is true for ions? Circle ‘Yes’ or ‘No’ for the correct response.
Is the statement true? Yes or No
An ion is always a single charged atom. Yes/No
An ion of a metal is always positively charged. Yes/No
An ion of a non-metal is either positively or negatively charged Yes/No
The atomic mass of four elements are given below.
Carbon Helium Calcium Nitrogen
Atomic mass (u) 12 4 40 14
SAS21S090308
8 Molar mass is the mass of 1 mole of an element or a compound.
Which element has the highest molar mass?
A. Carbon
B. Helium
C. Calcium
D. Nitrogen
SAS21S090309
9 What is the unit for molar mass?
A. u
B. g
C. mg
D. kg SAS21S090310
10 In which of these elements is the mass of 1 mole atom equal to the mass of 1 mole molecule?
A. H₂
B. O₂
C. He
D. O₃
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 14
Page 18
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 4
Structure of the Atom
The pictures show the arrangement of electrons in the shells of different atoms.
SAS21S090401
1 Which two atoms have the same valency?
A. Atom 1 and Atom 2
B. Atom 2 and Atom 3
C. Atom 3 and Atom 4
D. Atom 4 and Atom 1
SAS21S090402
2 Which atom has the highest atomic number?
A. Atom 1
B. Atom 2
C. Atom 3
D. Atom 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 15
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 4
Structure of the Atom
The pictures show the arrangement of electrons in the shells of different atoms.
SAS21S090401
1 Which two atoms have the same valency?
A. Atom 1 and Atom 2
B. Atom 2 and Atom 3
C. Atom 3 and Atom 4
D. Atom 4 and Atom 1
SAS21S090402
2 Which atom has the highest atomic number?
A. Atom 1
B. Atom 2
C. Atom 3
D. Atom 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 15
Page 19
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 4
SAS21S090403
3 What is the maximum number of electrons that can be present in the irst shell of an atom?
A. 1
B. 2
C. 4
D. 8
The picture shows the symbol for sodium.
SAS21S090404
4 What does the number 23 represent for sodium?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090405
5 What can be concluded about sodium from the symbol?
A. It contains 11 neutrons.
B. It contains 12 protons.
C. It contains 12 neutrons.
D. It contains 34 electrons.
SAS21S090406
6 Which of these statements about the isotopes of an element is correct?
Circle ‘Yes’ or ‘No’ for the correct response.
Is the statement correct? Yes or No
The isotopes have the same chemical properties. Yes / No
The isotopes have the same number of neutrons. Yes / No
The isotopes have the same number of electrons. Yes / No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 16
Class 9 – Chapter 4
SAS21S090403
3 What is the maximum number of electrons that can be present in the irst shell of an atom?
A. 1
B. 2
C. 4
D. 8
The picture shows the symbol for sodium.
SAS21S090404
4 What does the number 23 represent for sodium?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090405
5 What can be concluded about sodium from the symbol?
A. It contains 11 neutrons.
B. It contains 12 protons.
C. It contains 12 neutrons.
D. It contains 34 electrons.
SAS21S090406
6 Which of these statements about the isotopes of an element is correct?
Circle ‘Yes’ or ‘No’ for the correct response.
Is the statement correct? Yes or No
The isotopes have the same chemical properties. Yes / No
The isotopes have the same number of neutrons. Yes / No
The isotopes have the same number of electrons. Yes / No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 16
Page 20
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 4
SAS21S090407
7 Which of the following atoms are isobars?
A. C.
B. D.
SAS21S090408
8 What would be the valency of an element that is chemically inactive?
A. 0
B. 1
C. 2
D. 5
The outer boundary of Zone 1 is made of solid structures in the shape of isosceles triangles of the
same size and barbed wires.
N shell
M shell
L shell
K shell
SAS21S090409
9 What does X represent in the atomic model?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090410
10 Which scientist proposed this atomic model?
A. Neils Bohr
B. J. Chadwick
C. J.J. Thomson
D. Ernest Rutherford
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 17
Class 9 – Chapter 4
SAS21S090407
7 Which of the following atoms are isobars?
A. C.
B. D.
SAS21S090408
8 What would be the valency of an element that is chemically inactive?
A. 0
B. 1
C. 2
D. 5
The outer boundary of Zone 1 is made of solid structures in the shape of isosceles triangles of the
same size and barbed wires.
N shell
M shell
L shell
K shell
SAS21S090409
9 What does X represent in the atomic model?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090410
10 Which scientist proposed this atomic model?
A. Neils Bohr
B. J. Chadwick
C. J.J. Thomson
D. Ernest Rutherford
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 17
Page 21
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 5
Fundamental Unit of Life
The diagram shows an animal cell with some of its organelles. X is also a cell organelle.
SAS21S090501
1 What does X represent in the diagram?
A. Nucleus
B. Chromosomes
C. Golgi apparatus
D. Endoplasmic reticulum
SAS21S090502
2 The inner membrane of the mitochondria is folded into many inger-like projections. Explain what
would happen if the inner membrane was not folded?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 18
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 5
Fundamental Unit of Life
The diagram shows an animal cell with some of its organelles. X is also a cell organelle.
SAS21S090501
1 What does X represent in the diagram?
A. Nucleus
B. Chromosomes
C. Golgi apparatus
D. Endoplasmic reticulum
SAS21S090502
2 The inner membrane of the mitochondria is folded into many inger-like projections. Explain what
would happen if the inner membrane was not folded?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 18
Page 22
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 5
SAS21S090503
3 Which cell organelles found only in a plant cell are not shown in the diagram?
Circle ‘Yes’ or ‘No’ for each row.
Features found only in a plant cell Yes or No
Cell wall Yes/No
Ribosomes Yes/No
Chloroplast Yes/No
Cells grow by dividing. The picture shows one such growing cell ready to divide.
chromosomes
SAS21S090504
4 How many cells will be formed after the cell divides completely?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090505
5 How many chromosomes will each daughter cell receive?
A. 2
B. 4
C. 8
D. 12
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 19
Class 9 – Chapter 5
SAS21S090503
3 Which cell organelles found only in a plant cell are not shown in the diagram?
Circle ‘Yes’ or ‘No’ for each row.
Features found only in a plant cell Yes or No
Cell wall Yes/No
Ribosomes Yes/No
Chloroplast Yes/No
Cells grow by dividing. The picture shows one such growing cell ready to divide.
chromosomes
SAS21S090504
4 How many cells will be formed after the cell divides completely?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090505
5 How many chromosomes will each daughter cell receive?
A. 2
B. 4
C. 8
D. 12
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 19
Page 23
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 5
Sania conducts an experiment to know how plant cells lose or gain water through osmosis.
She cuts out 5 cm long potato strips. She puts three potato strips in each of the following beakers:
• Beaker 1 containing only water
• Beaker 2 containing 1% salt solution
• Beaker 3 containing 2% salt solution
Sania leaves the potato strips in the beaker for 5 hours.
She records the length of the potato strips in each beaker after 5 hours.
SAS21S090506
6 What can Sania conclude from her experiment?
A. Salt molecules from the cell move out when kept in water.
B. Cells gain water through osmosis when kept in salt solution.
C. Cells in salt solution irst gain water and then gradually lose water.
D. Water molecules move out of the cell based on the amount of salt in the solution.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 20
Class 9 – Chapter 5
Sania conducts an experiment to know how plant cells lose or gain water through osmosis.
She cuts out 5 cm long potato strips. She puts three potato strips in each of the following beakers:
• Beaker 1 containing only water
• Beaker 2 containing 1% salt solution
• Beaker 3 containing 2% salt solution
Sania leaves the potato strips in the beaker for 5 hours.
She records the length of the potato strips in each beaker after 5 hours.
SAS21S090506
6 What can Sania conclude from her experiment?
A. Salt molecules from the cell move out when kept in water.
B. Cells gain water through osmosis when kept in salt solution.
C. Cells in salt solution irst gain water and then gradually lose water.
D. Water molecules move out of the cell based on the amount of salt in the solution.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 20
Page 24
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 5
SAS21S090507
7 In which beaker was the concentration of water molecules inside and outside the potato cells likely to
be the same? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090508
8 Why did Sania place three potato strips in each beaker?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090509
9 Which of these properties quali ies amoeba as eukaryotes?
A. It is unicellular.
B. It needs food for energy.
C. It has a membrane bound nucleus.
D. It is surrounded by a plasma membrane.
SAS21S090510
10 What property of the plasma membrane helps amoeba acquire food?
A. It is lexible.
B. It is selectively permeable.
C. It is made up of proteins and lipids.
D. It allows diffusion of some substances across it.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 21
Class 9 – Chapter 5
SAS21S090507
7 In which beaker was the concentration of water molecules inside and outside the potato cells likely to
be the same? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090508
8 Why did Sania place three potato strips in each beaker?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090509
9 Which of these properties quali ies amoeba as eukaryotes?
A. It is unicellular.
B. It needs food for energy.
C. It has a membrane bound nucleus.
D. It is surrounded by a plasma membrane.
SAS21S090510
10 What property of the plasma membrane helps amoeba acquire food?
A. It is lexible.
B. It is selectively permeable.
C. It is made up of proteins and lipids.
D. It allows diffusion of some substances across it.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 21
Page 25
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 6
Tissues
Apical meristem is a type of tissue that helps plants grow in length.
Tina took two identical potted plants and cut the shoot tip of one of them.
She observed if the two plants grew in height after a week.
SAS21S090601
1 What was Tina trying to ind out about shoot tips through her experiment?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090602
2 Which of these conditions would have made Tina’s experiment invalid?
Circle ‘Yes’ or ‘No’ to mark your responses.
Would this have made the experiment invalid? Yes or No
Keeping one plant in sunlight and the other in a dark room Yes/No
Watering both the plants equally Yes/No
Adding manure to the soil of plant 1 only Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 22
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 6
Tissues
Apical meristem is a type of tissue that helps plants grow in length.
Tina took two identical potted plants and cut the shoot tip of one of them.
She observed if the two plants grew in height after a week.
SAS21S090601
1 What was Tina trying to ind out about shoot tips through her experiment?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090602
2 Which of these conditions would have made Tina’s experiment invalid?
Circle ‘Yes’ or ‘No’ to mark your responses.
Would this have made the experiment invalid? Yes or No
Keeping one plant in sunlight and the other in a dark room Yes/No
Watering both the plants equally Yes/No
Adding manure to the soil of plant 1 only Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 22
Page 26
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 6
SAS21S090603
3 Why do cells of apical meristem lack vacuoles?
A. They store food materials.
B. They have thin cell walls.
C. They contain dense cytoplasm.
D. They are actively dividing cells.
Stomata are minute openings found in the epidermis of plant leaves.
Each stoma allows carbon dioxide, oxygen and water vapour to diffuse in and out of a plant’s
internal tissues.
Figure 1 Figure 2
SAS21S090604
4 Each stoma is surrounded by a pair of elongated cells.
What is this pair of cells known as?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090605
5 Why do desert plants have smaller and fewer stomata as compared to rainforest plants?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The pictures show the cross-sections of two chopped tree trunks.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 23
Class 9 – Chapter 6
SAS21S090603
3 Why do cells of apical meristem lack vacuoles?
A. They store food materials.
B. They have thin cell walls.
C. They contain dense cytoplasm.
D. They are actively dividing cells.
Stomata are minute openings found in the epidermis of plant leaves.
Each stoma allows carbon dioxide, oxygen and water vapour to diffuse in and out of a plant’s
internal tissues.
Figure 1 Figure 2
SAS21S090604
4 Each stoma is surrounded by a pair of elongated cells.
What is this pair of cells known as?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090605
5 Why do desert plants have smaller and fewer stomata as compared to rainforest plants?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The pictures show the cross-sections of two chopped tree trunks.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 23
Page 27
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 6
SAS21S090606
6 Which layer in the cross-sections of both the trees is made of dead cells?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090607
7 Which question can be answered from the picture?
A. Was tree 1 taller than tree 2?
B. Was tree 1 younger than tree 2?
C. Did tree 1 bear more fruits than tree 2?
D. Did tree 1 have more branches than tree 2?
SAS21S090608
8 Which of these is correct about connective tissues?
Circle ‘Yes’ or ‘No’ to mark your responses.
Is the statement correct? Yes/No
All connective tissues are highly lexible. Yes/No
All connective tissues contain cells that are either placed in a luid or Yes/No
in a solid matrix.
All connective tissues form frameworks that provide support to Yes/No
organs.
The picture shows three types of tissues found in the human body.
SAS21S090609
9 The inner lining of alveoli (air sacs in lungs) is very thin and delicate.
Which type of tissue forms the inner lining of alveoli?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 24
Class 9 – Chapter 6
SAS21S090606
6 Which layer in the cross-sections of both the trees is made of dead cells?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090607
7 Which question can be answered from the picture?
A. Was tree 1 taller than tree 2?
B. Was tree 1 younger than tree 2?
C. Did tree 1 bear more fruits than tree 2?
D. Did tree 1 have more branches than tree 2?
SAS21S090608
8 Which of these is correct about connective tissues?
Circle ‘Yes’ or ‘No’ to mark your responses.
Is the statement correct? Yes/No
All connective tissues are highly lexible. Yes/No
All connective tissues contain cells that are either placed in a luid or Yes/No
in a solid matrix.
All connective tissues form frameworks that provide support to Yes/No
organs.
The picture shows three types of tissues found in the human body.
SAS21S090609
9 The inner lining of alveoli (air sacs in lungs) is very thin and delicate.
Which type of tissue forms the inner lining of alveoli?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 24
Page 28
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 6
SAS21S090610
10 Which of these cells is the longest?
A. Bone cell
B. Nerve cell
C. Stomach cell
D. Heart muscle cell
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 25
Class 9 – Chapter 6
SAS21S090610
10 Which of these cells is the longest?
A. Bone cell
B. Nerve cell
C. Stomach cell
D. Heart muscle cell
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 25
Page 29
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 7
Diversity in Living Organisms
The diagram shows the various levels of classi ication of organisms.
Level 1 is the largest unit while level 7 is the smallest unit of classi ication.
SAS21S090701
1 Organisms in which level share the maximum number of common characteristics?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090702
2 If Level 1 is Kingdom then what is Level 7?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 26
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 7
Diversity in Living Organisms
The diagram shows the various levels of classi ication of organisms.
Level 1 is the largest unit while level 7 is the smallest unit of classi ication.
SAS21S090701
1 Organisms in which level share the maximum number of common characteristics?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090702
2 If Level 1 is Kingdom then what is Level 7?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 26
Page 30
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 7
SAS21S090703
3 At which level are plants separated from animals?
A. Level 1
B. Level 2
C. Level 3
D. Level 4
The table shows different levels of classi ication of plants.
has vascular tissue
SAS21S090704
4 Which of these features is true for a plant that bears naked seeds?
A. It has vascular tissues.
B. It has no vascular tissue.
C. It has no differentiated body parts.
D. It also produces seeds inside fruits.
SAS21S090705
5 Complete the table using the information given in the low chart.
The irst step is done for you.
Step Feature of the plants in the group Type of Plan
Body parts are not differentiated Type P
1
Body parts differentiated Step 2
2
3
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 27
Class 9 – Chapter 7
SAS21S090703
3 At which level are plants separated from animals?
A. Level 1
B. Level 2
C. Level 3
D. Level 4
The table shows different levels of classi ication of plants.
has vascular tissue
SAS21S090704
4 Which of these features is true for a plant that bears naked seeds?
A. It has vascular tissues.
B. It has no vascular tissue.
C. It has no differentiated body parts.
D. It also produces seeds inside fruits.
SAS21S090705
5 Complete the table using the information given in the low chart.
The irst step is done for you.
Step Feature of the plants in the group Type of Plan
Body parts are not differentiated Type P
1
Body parts differentiated Step 2
2
3
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 27
Page 31
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 7
SAS21S090706
6 Which of these is the correct way of writing the scienti ic name of a tiger?
A.
B.
C.
D.
SAS21S090707
7 Which one of these is the lowest unit of classi ication?
A. Order
B. Class
C. Family
D. Phylum
Porifera is a group of animals that have the following features.
• They are non-motile and are attached to a solid support.
• They have pores all over the body.
• They are made of only a few types of tissues.
SAS21S090708
8 Which of these animals belongs to the Porifera group?
A. B. C. D.
Millipede Octopus Sponge Sea Anemone
SAS21S090709
9 Which of these should be considered while classifying animals into a common group?
Should this be considered? Yes or No
Similarity in habitat Yes/No
Similarity in food sources Yes/No
Similarity in cells, tissues and organs Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 28
Class 9 – Chapter 7
SAS21S090706
6 Which of these is the correct way of writing the scienti ic name of a tiger?
A.
B.
C.
D.
SAS21S090707
7 Which one of these is the lowest unit of classi ication?
A. Order
B. Class
C. Family
D. Phylum
Porifera is a group of animals that have the following features.
• They are non-motile and are attached to a solid support.
• They have pores all over the body.
• They are made of only a few types of tissues.
SAS21S090708
8 Which of these animals belongs to the Porifera group?
A. B. C. D.
Millipede Octopus Sponge Sea Anemone
SAS21S090709
9 Which of these should be considered while classifying animals into a common group?
Should this be considered? Yes or No
Similarity in habitat Yes/No
Similarity in food sources Yes/No
Similarity in cells, tissues and organs Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 28
Page 32
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 7
SAS21S090710
10 Which of these features are found in animals that belong to the Aves class?
A. They are cold-blooded.
B. They breathe through lungs.
C. They have three chambered hearts.
D. Their skins have hair and sweat glands.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 29
Class 9 – Chapter 7
SAS21S090710
10 Which of these features are found in animals that belong to the Aves class?
A. They are cold-blooded.
B. They breathe through lungs.
C. They have three chambered hearts.
D. Their skins have hair and sweat glands.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 29
Page 33
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 8
Motion
The igure below shows the motion of a car along a straight path.
The car moves from house to school and school to library.
It then moves back to the school and stops.
SAS21S090801
1 What is the net displacement of the car?
A. 20 km
B. 30 km
C. 50 km
D. 70 km
SAS21S090802
2 What is the total distance travelled by the car?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 30
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 8
Motion
The igure below shows the motion of a car along a straight path.
The car moves from house to school and school to library.
It then moves back to the school and stops.
SAS21S090801
1 What is the net displacement of the car?
A. 20 km
B. 30 km
C. 50 km
D. 70 km
SAS21S090802
2 What is the total distance travelled by the car?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 30
Page 34
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 8
The graph below shows how the car travelled from house to school.
SAS21S090803
3 Did the car move with uniform motion from house to school? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The table below shows the speed of a bus in three hours of its travel.
First hour Second hour Third hour
Speed of the bus 35 km/hr 60 km/hr 40 km/hr
SAS21S090804
4
What was the average speed of the bus?
A. 35 km/ hr
B. 40 km/ hr
C. 45 km/ hr
D. 60 km/ hr
Rehana and Anju stay at different places but study in the same school.
The velocity-time graph shows how Rehana and Anju bicycled from house to school.
Velocity-time Velocity-time
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 31
Class 9 – Chapter 8
The graph below shows how the car travelled from house to school.
SAS21S090803
3 Did the car move with uniform motion from house to school? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The table below shows the speed of a bus in three hours of its travel.
First hour Second hour Third hour
Speed of the bus 35 km/hr 60 km/hr 40 km/hr
SAS21S090804
4
What was the average speed of the bus?
A. 35 km/ hr
B. 40 km/ hr
C. 45 km/ hr
D. 60 km/ hr
Rehana and Anju stay at different places but study in the same school.
The velocity-time graph shows how Rehana and Anju bicycled from house to school.
Velocity-time Velocity-time
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 31
Page 35
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 8
SAS21S090805
5 Which statement can be concluded from Rehana’s cycling graph?
A. Rehana was at rest during the irst 5 minutes.
B. Rehana cycled the fastest between 5 minutes and 10 minutes.
C. Rehana cycled with uniform acceleration between 15 minutes and 20 minutes.
D. Rehana was cycling with a uniform velocity between 10 minutes and 15 minutes.
SAS21S090806
6 What was Rehana’s maximum cycling velocity?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090807
7 What can be concluded by comparing the velocity-time graphs of Rehana and Anju?
A. Anju took lesser time to reach school than Rehana.
B. Anju cycled faster than Rehana at the start of the journey.
C. Anju and Rehana had the same maximum cycling velocity.
D. Anju’s cycling velocity in the irst 5 minutes was lesser than that of Rehana.
The picture below shows a man swinging an object in a uniform circular motion.
A, B and C are three different points on the path of motion of the object.
SAS21S090808
8 What is the net displacement of the object after one complete swing?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 32
Class 9 – Chapter 8
SAS21S090805
5 Which statement can be concluded from Rehana’s cycling graph?
A. Rehana was at rest during the irst 5 minutes.
B. Rehana cycled the fastest between 5 minutes and 10 minutes.
C. Rehana cycled with uniform acceleration between 15 minutes and 20 minutes.
D. Rehana was cycling with a uniform velocity between 10 minutes and 15 minutes.
SAS21S090806
6 What was Rehana’s maximum cycling velocity?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090807
7 What can be concluded by comparing the velocity-time graphs of Rehana and Anju?
A. Anju took lesser time to reach school than Rehana.
B. Anju cycled faster than Rehana at the start of the journey.
C. Anju and Rehana had the same maximum cycling velocity.
D. Anju’s cycling velocity in the irst 5 minutes was lesser than that of Rehana.
The picture below shows a man swinging an object in a uniform circular motion.
A, B and C are three different points on the path of motion of the object.
SAS21S090808
8 What is the net displacement of the object after one complete swing?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 32
Page 36
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 8
SAS21S090809
9 Which velocity-time graph shows a period of acceleration in the motion?
A.
B.
C.
D.
SAS21S090810
10 What is the correct unit for measuring the acceleration of a moving object?
A. m
B. s
C. m s-
D. ms
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 33
Class 9 – Chapter 8
SAS21S090809
9 Which velocity-time graph shows a period of acceleration in the motion?
A.
B.
C.
D.
SAS21S090810
10 What is the correct unit for measuring the acceleration of a moving object?
A. m
B. s
C. m s-
D. ms
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 33
Page 37
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 9
Force and Laws of Motion
A rolling ball of mass 3 kg strikes a smaller ball of mass 1 kg at rest.
After collision, both the balls roll in the direction shown in the picture.
SAS21S090901
1 The bigger ball strikes the smaller ball with a momentum.
What would the momentum of the ball depend on?
Circle ‘Yes’ or ‘No’ to mark your response.
Would the momentum depend on this? Yes or No
mass of the ball Yes/No
shape of the ball Yes/No
velocity of the ball Yes/No
SAS21S090902
2 After their collision, both the balls continue to roll for some time and then come to a rest.
Which external force causes the balls to stop rolling?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 34
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 9
Force and Laws of Motion
A rolling ball of mass 3 kg strikes a smaller ball of mass 1 kg at rest.
After collision, both the balls roll in the direction shown in the picture.
SAS21S090901
1 The bigger ball strikes the smaller ball with a momentum.
What would the momentum of the ball depend on?
Circle ‘Yes’ or ‘No’ to mark your response.
Would the momentum depend on this? Yes or No
mass of the ball Yes/No
shape of the ball Yes/No
velocity of the ball Yes/No
SAS21S090902
2 After their collision, both the balls continue to roll for some time and then come to a rest.
Which external force causes the balls to stop rolling?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 34
Page 38
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 9
SAS21S090903
3 What would happen if the smaller ball were rolling with a velocity of 5 m/s and struck the bigger ball at
rest?
A. The two balls would continue to roll in the direction of the strike.
B. The smaller ball would rebound and the bigger ball would roll forward.
C. The two balls would roll in the direction opposite to the strike.
D. The smaller ball would stop rolling and the bigger ball would start rolling.
A man pushes four boxes of different mass.
The table shows the acceleration produced for each box during the push.
Mass of the box Acceleration produced
(kg) (m/s²)
10 200
20 100
40 50
80 25
What amount of force does the man exert on each box? Show the calculation. SAS21S090904
4
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090905
5 Is the force acting on each box unbalanced? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090906
6 Which of these represent a balanced force?
A. A boy sitting on a chair
B. An object sinking in water
C. An apple falling from a tree
D. A magnet attracting an iron nail
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 35
Class 9 – Chapter 9
SAS21S090903
3 What would happen if the smaller ball were rolling with a velocity of 5 m/s and struck the bigger ball at
rest?
A. The two balls would continue to roll in the direction of the strike.
B. The smaller ball would rebound and the bigger ball would roll forward.
C. The two balls would roll in the direction opposite to the strike.
D. The smaller ball would stop rolling and the bigger ball would start rolling.
A man pushes four boxes of different mass.
The table shows the acceleration produced for each box during the push.
Mass of the box Acceleration produced
(kg) (m/s²)
10 200
20 100
40 50
80 25
What amount of force does the man exert on each box? Show the calculation. SAS21S090904
4
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090905
5 Is the force acting on each box unbalanced? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090906
6 Which of these represent a balanced force?
A. A boy sitting on a chair
B. An object sinking in water
C. An apple falling from a tree
D. A magnet attracting an iron nail
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 35
Page 39
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 9
A football and a tennis ball fall freely on a marble loor from a height of 5 m.
SAS21S090907
7 Will the football and the tennis ball hit the loor with the same momentum? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090908
8 Both balls bounced back after hitting the loor.
What caused the balls to bounce back?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090909
9 Will the balls reach a height of 5 m or less than 5 m after bouncing back? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090910
10 Which of these will produce the maximum acceleration?
A. A force of 1000 N acting on a mass of 10 kg
B. A force of 1000 N acting on a mass of 5 kg
C. A force of 3000 N acting on a mass of 30 kg
D. A force of 3000 N acting on a mass of 10 kg
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 36
Class 9 – Chapter 9
A football and a tennis ball fall freely on a marble loor from a height of 5 m.
SAS21S090907
7 Will the football and the tennis ball hit the loor with the same momentum? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090908
8 Both balls bounced back after hitting the loor.
What caused the balls to bounce back?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090909
9 Will the balls reach a height of 5 m or less than 5 m after bouncing back? Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S090910
10 Which of these will produce the maximum acceleration?
A. A force of 1000 N acting on a mass of 10 kg
B. A force of 1000 N acting on a mass of 5 kg
C. A force of 3000 N acting on a mass of 30 kg
D. A force of 3000 N acting on a mass of 10 kg
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 36
Page 40
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 10
Gravitation
The force of gravity acting between two objects is:
• directly proportional to the product of their masses.
• inversely proportional to the square of the distance between them.
SAS21S091001
1 Which pair of objects will have the strongest force of gravity between them?
A.
B.
C.
D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 37
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 10
Gravitation
The force of gravity acting between two objects is:
• directly proportional to the product of their masses.
• inversely proportional to the square of the distance between them.
SAS21S091001
1 Which pair of objects will have the strongest force of gravity between them?
A.
B.
C.
D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 37
Page 41
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 10
SAS21S091002
2 The formula for calculating the force of gravity between two objects is as follows:
M×m
F=G
d2
What does G stand for in the formula?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The picture shows the moon’s gravitational force acting on the earth’s surface.
The arrow represents the direction of the force.
1, 2, 3 and 4 are four different locations on the earth’s surface.
SAS21S091003
3 Which locations will experience low tide as shown in the picture?
A. Location 1 and Location 2
B. Location 2 and Location 4
C. Location 1 and Location 3
D. Location 3 and Location 4
SAS21S091004
4 The moon moves around the earth in a ixed orbit.
What makes the moon move in the ixed orbit?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 38
Class 9 – Chapter 10
SAS21S091002
2 The formula for calculating the force of gravity between two objects is as follows:
M×m
F=G
d2
What does G stand for in the formula?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The picture shows the moon’s gravitational force acting on the earth’s surface.
The arrow represents the direction of the force.
1, 2, 3 and 4 are four different locations on the earth’s surface.
SAS21S091003
3 Which locations will experience low tide as shown in the picture?
A. Location 1 and Location 2
B. Location 2 and Location 4
C. Location 1 and Location 3
D. Location 3 and Location 4
SAS21S091004
4 The moon moves around the earth in a ixed orbit.
What makes the moon move in the ixed orbit?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 38
Page 42
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 10
Ayesha has four solid boxes.
The handles of the boxes are of different thickness and size.
All the boxes along with their handles have the same mass.
SAS21S091005
5 Ayesha tries to lift the four boxes one by one.
Which box will be the most dif icult to lift?
A. Box 1
B. Box 2
C. Box 3
D. Box 4
SAS21S091006
6 Which box has the most weight?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S091007
7 Which box has the most weight?
Explain your answer.
Density of the object
Relative density of an object =
Density of water
An object loats on water.
What should be the relative density of the object?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 39
Class 9 – Chapter 10
Ayesha has four solid boxes.
The handles of the boxes are of different thickness and size.
All the boxes along with their handles have the same mass.
SAS21S091005
5 Ayesha tries to lift the four boxes one by one.
Which box will be the most dif icult to lift?
A. Box 1
B. Box 2
C. Box 3
D. Box 4
SAS21S091006
6 Which box has the most weight?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S091007
7 Which box has the most weight?
Explain your answer.
Density of the object
Relative density of an object =
Density of water
An object loats on water.
What should be the relative density of the object?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 39
Page 43
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 10
SAS21S091008
8 Why is it essential for deep-sea diving vessels to be built of thick sheets of steel?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Peter pours the same amount of four different liquids in separate cylinders.
The cylinders are of the same size.
He then drops a glass marble in each of the four cylinders.
Peter notes the time the marble takes to reach the bottom of each cylinder.
The table shows the results.
Liquid Time taken by the marble to reach the
bottom of the cylinder (in seconds)
Liquid 1 1.8 sec
Liquid 2 1.5 sec
Liquid 3 0.8 sec
Liquid 4 1.0 sec
SAS21S091009
9 Which liquid exerted the most upward force on the marble?
A. Liquid 1
B. Liquid 2
C. Liquid 3
D. Liquid 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 40
Class 9 – Chapter 10
SAS21S091008
8 Why is it essential for deep-sea diving vessels to be built of thick sheets of steel?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Peter pours the same amount of four different liquids in separate cylinders.
The cylinders are of the same size.
He then drops a glass marble in each of the four cylinders.
Peter notes the time the marble takes to reach the bottom of each cylinder.
The table shows the results.
Liquid Time taken by the marble to reach the
bottom of the cylinder (in seconds)
Liquid 1 1.8 sec
Liquid 2 1.5 sec
Liquid 3 0.8 sec
Liquid 4 1.0 sec
SAS21S091009
9 Which liquid exerted the most upward force on the marble?
A. Liquid 1
B. Liquid 2
C. Liquid 3
D. Liquid 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 40
Page 44
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 10
SAS21S091010
10 Four different objects are placed in a tumbler of water.
Which object will displace more water than its own weight?
A.
Steel spoon
B.
Steel bowl
C.
Steel coin
D .
Steel ball
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 41
Class 9 – Chapter 10
SAS21S091010
10 Four different objects are placed in a tumbler of water.
Which object will displace more water than its own weight?
A.
Steel spoon
B.
Steel bowl
C.
Steel coin
D .
Steel ball
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 41
Page 45
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 11
Work and Energy
Rahul pushed four toy cars on a surface.
The picture shows the distance each toy car travelled before coming to a stop.
SAS21S091101
1 In pushing which car was the work done by Rahul the greatest?
A. Toy car 1
B. Toy car 2
C. Toy car 3
D. Toy car 4
SAS21S091102
2 In which of these conditions is the work done negative?
Circle ‘Yes’ or ‘No’ to mark your responses.
Is the work done negative? Yes or No
Wind force making a boat move forward on water Yes/No
Brake force resisting the motion of a moving wheel Yes/No
Buoyant force slowing the sinking of an iron nail in water Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 42
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 11
Work and Energy
Rahul pushed four toy cars on a surface.
The picture shows the distance each toy car travelled before coming to a stop.
SAS21S091101
1 In pushing which car was the work done by Rahul the greatest?
A. Toy car 1
B. Toy car 2
C. Toy car 3
D. Toy car 4
SAS21S091102
2 In which of these conditions is the work done negative?
Circle ‘Yes’ or ‘No’ to mark your responses.
Is the work done negative? Yes or No
Wind force making a boat move forward on water Yes/No
Brake force resisting the motion of a moving wheel Yes/No
Buoyant force slowing the sinking of an iron nail in water Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 42
Page 46
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 11
The picture shows a ball bouncing several times before coming to a stop.
SAS21S091103
3 At which point was the potential energy of the ball maximum?
A. Point 1
B. Point 2
C. Point 3
D. Point 4
SAS21S091104
4 What would be the shape of the ball at the moment it hit the surface?
A. B. C. D.
SAS21S091105
5 Which of these factors caused the ball to stop bouncing?
A. Only gravity
B. Only air resistance
C. Hardness of the surface and gravity
D. Conversion of energy and air resistance
Four persons separately pulled a 100 kg cart for a distance of 500 m.
The table shows the time each person took to cover the distance with the cart.
Person 1 Person 2 Person 3 Person 4
Time taken to cover the distance 12 mins 15 mins 10 mins 18 mins
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 43
Class 9 – Chapter 11
The picture shows a ball bouncing several times before coming to a stop.
SAS21S091103
3 At which point was the potential energy of the ball maximum?
A. Point 1
B. Point 2
C. Point 3
D. Point 4
SAS21S091104
4 What would be the shape of the ball at the moment it hit the surface?
A. B. C. D.
SAS21S091105
5 Which of these factors caused the ball to stop bouncing?
A. Only gravity
B. Only air resistance
C. Hardness of the surface and gravity
D. Conversion of energy and air resistance
Four persons separately pulled a 100 kg cart for a distance of 500 m.
The table shows the time each person took to cover the distance with the cart.
Person 1 Person 2 Person 3 Person 4
Time taken to cover the distance 12 mins 15 mins 10 mins 18 mins
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 43
Page 47
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 11
SAS21S091106
6 At which point was the potential energy of the ball maximum?
A. Point 1
B. Point 2
C. Point 3
D. Point 4
SAS21S091107
7 What must be kept the same in the activity to make a valid conclusion?
Circle ‘Yes’ or ‘No’ to mark your responses.
Should this be kept the same? Yes or No
Mass of each person Yes/No
Height of each person Yes/No
Surface on which the cart was pulled Yes/No
SAS21S091108
8 Which of these involves the conversion of kinetic energy to potential energy?
A. A person diving into a pool of water from a board
B. A person gliding in air with the help of a parachute
C. A person sliding down from the top of a water slide
D. A person riding a motorbike to the top of an overbridge
The graph shows the number of units of electricity consumed by two houses in four months.
Units
consumed
SAS21S091109
9 What can be concluded from the graph?
A. Both the houses consumed maximum electricity in May.
B. House 1 consumed more electricity than House 2 in July.
C. House 1 consumed less electricity than House 2 inall the four months.
D. The amount of electricity consumed by both the houses increased over the four months.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 44
Class 9 – Chapter 11
SAS21S091106
6 At which point was the potential energy of the ball maximum?
A. Point 1
B. Point 2
C. Point 3
D. Point 4
SAS21S091107
7 What must be kept the same in the activity to make a valid conclusion?
Circle ‘Yes’ or ‘No’ to mark your responses.
Should this be kept the same? Yes or No
Mass of each person Yes/No
Height of each person Yes/No
Surface on which the cart was pulled Yes/No
SAS21S091108
8 Which of these involves the conversion of kinetic energy to potential energy?
A. A person diving into a pool of water from a board
B. A person gliding in air with the help of a parachute
C. A person sliding down from the top of a water slide
D. A person riding a motorbike to the top of an overbridge
The graph shows the number of units of electricity consumed by two houses in four months.
Units
consumed
SAS21S091109
9 What can be concluded from the graph?
A. Both the houses consumed maximum electricity in May.
B. House 1 consumed more electricity than House 2 in July.
C. House 1 consumed less electricity than House 2 inall the four months.
D. The amount of electricity consumed by both the houses increased over the four months.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 44
Page 48
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 11
SAS21S091110
10 What is meant by one unit of electricity?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 45
Class 9 – Chapter 11
SAS21S091110
10 What is meant by one unit of electricity?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 45
Page 49
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 12
Sound
The picture shows four sound waves.
SAS21S091201
1 Which sound wave has the highest frequency?
A. Sound wave 1
B. Sound wave 2
C. Sound wave 3
D. Sound wave 4
SAS21S091202
2 Which two sound waves have almost the same loudness?
A. Sound wave 1 and sound wave 2
B. Sound wave 2 and sound wave 4
C. Sound wave 1 and sound wave 3
D. Sound wave 3 and sound wave 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 46
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 12
Sound
The picture shows four sound waves.
SAS21S091201
1 Which sound wave has the highest frequency?
A. Sound wave 1
B. Sound wave 2
C. Sound wave 3
D. Sound wave 4
SAS21S091202
2 Which two sound waves have almost the same loudness?
A. Sound wave 1 and sound wave 2
B. Sound wave 2 and sound wave 4
C. Sound wave 1 and sound wave 3
D. Sound wave 3 and sound wave 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 46
Page 50
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 12
SAS21S091203
3 Which of these is the frequency of an infrasound?
A. 10 Hz
B. 75 Hz
C. 15000 Hz
D. 35000 Hz
Sound intensity is the total amount of energy in a sound wave.
Decibel (dB) is the unit of intensity.
The chart shows the permissible time for listening to different sounds.
Library Front row of rock Restaurant table Exhaust of sports
concert bike
30 dB 140 dB 70 dB 100 dB
SAS21S091204
4 Which of these actions does not follow the permissible exposure time of hearing?
A. Reading in a library for 5 hours
B. Riding a sports bike for 10 minutes
C. Dining at a restaurant table for an hour
D. Sitting in the front row of a rock concert for 30 minutes
SAS21S091205
5 Which of these depends on the intensity of a sound?
Circle ‘Yes’ or ‘No’ for the correct response.
Does this depend on the intensity of the sound? Yes or No
speed of the sound Yes / No
loudness of the sound Yes / No
frequency of the sound Yes / No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 47
Class 9 – Chapter 12
SAS21S091203
3 Which of these is the frequency of an infrasound?
A. 10 Hz
B. 75 Hz
C. 15000 Hz
D. 35000 Hz
Sound intensity is the total amount of energy in a sound wave.
Decibel (dB) is the unit of intensity.
The chart shows the permissible time for listening to different sounds.
Library Front row of rock Restaurant table Exhaust of sports
concert bike
30 dB 140 dB 70 dB 100 dB
SAS21S091204
4 Which of these actions does not follow the permissible exposure time of hearing?
A. Reading in a library for 5 hours
B. Riding a sports bike for 10 minutes
C. Dining at a restaurant table for an hour
D. Sitting in the front row of a rock concert for 30 minutes
SAS21S091205
5 Which of these depends on the intensity of a sound?
Circle ‘Yes’ or ‘No’ for the correct response.
Does this depend on the intensity of the sound? Yes or No
speed of the sound Yes / No
loudness of the sound Yes / No
frequency of the sound Yes / No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 47
Page 51
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 12
Dolphins can locate their prey underwater by using sound waves.
They release sound waves that travel, hit the prey and re lect to them.
SAS21S091206
6 What do the two types of waves represent?
Use the labels below to ill in the boxes.
Ÿ emitted sound waves
Ÿ re lected sound waves
SAS21S091207
7 Which of these can the dolphin also ind out by using the sound waves?
Circle ‘Yes’ or ‘No’ for the correct response.
Can the dolphin ind this by using the sound waves? Yes or No
Is there any predator nearby? Yes/No
Is there any obstacle in the path of its travel? Yes/No
At what depth from the water surface is it travelling? Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 48
Class 9 – Chapter 12
Dolphins can locate their prey underwater by using sound waves.
They release sound waves that travel, hit the prey and re lect to them.
SAS21S091206
6 What do the two types of waves represent?
Use the labels below to ill in the boxes.
Ÿ emitted sound waves
Ÿ re lected sound waves
SAS21S091207
7 Which of these can the dolphin also ind out by using the sound waves?
Circle ‘Yes’ or ‘No’ for the correct response.
Can the dolphin ind this by using the sound waves? Yes or No
Is there any predator nearby? Yes/No
Is there any obstacle in the path of its travel? Yes/No
At what depth from the water surface is it travelling? Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 48
Page 52
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 12
The diagram shows the structure of the human ear.
The three basic divisions are outer ear, middle ear and inner ear.
SAS21S091208
8 Which division of the human ear contains bones?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S091209
9 What is likely to cause loss of hearing when a pointed object is inserted into the ear?
A. Cut in the ear canal
B. Puncture in the pinna
C. Rupture of the ear drum
D. Rupture of the auditory nerve
SAS21S091210
10 In which of these conditions will an echo be heard?
A. A man playing drums on a beach.
B. A man reciting poems in a small room.
C. A man shouting from the middle of an open farm.
D. A man shouting from a place that is surrounded by hills.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 49
Class 9 – Chapter 12
The diagram shows the structure of the human ear.
The three basic divisions are outer ear, middle ear and inner ear.
SAS21S091208
8 Which division of the human ear contains bones?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S091209
9 What is likely to cause loss of hearing when a pointed object is inserted into the ear?
A. Cut in the ear canal
B. Puncture in the pinna
C. Rupture of the ear drum
D. Rupture of the auditory nerve
SAS21S091210
10 In which of these conditions will an echo be heard?
A. A man playing drums on a beach.
B. A man reciting poems in a small room.
C. A man shouting from the middle of an open farm.
D. A man shouting from a place that is surrounded by hills.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 49
Page 53
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 13
Why Do We Fall Ill?
SAS21S091301
1 Which of these habits can cause illness?
A. Bathing regularly
B. Washing food before eating
C. Washing hands after entering home
D. Wearing unwashed clothes for a week
SAS21S091302
2 Which of these is a correct pair of a chronic disease and an acute disease?
Chronic disease Acute disease
A. Arthritis Malaria
B. Typhoid Cancer
C. Malaria Typhoid
D. Cancer Arthritis
SAS21S091303
3 Which of these statements is true about infectious diseases?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this true about infectious diseases? Yes or No
They are caused by microorganisms. Yes/No
They are caused by excessive physical activity. Yes/No
Common cold is an infectious disease. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 50
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 13
Why Do We Fall Ill?
SAS21S091301
1 Which of these habits can cause illness?
A. Bathing regularly
B. Washing food before eating
C. Washing hands after entering home
D. Wearing unwashed clothes for a week
SAS21S091302
2 Which of these is a correct pair of a chronic disease and an acute disease?
Chronic disease Acute disease
A. Arthritis Malaria
B. Typhoid Cancer
C. Malaria Typhoid
D. Cancer Arthritis
SAS21S091303
3 Which of these statements is true about infectious diseases?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this true about infectious diseases? Yes or No
They are caused by microorganisms. Yes/No
They are caused by excessive physical activity. Yes/No
Common cold is an infectious disease. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 50
Page 54
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 13
SAS21S091304
4 Riya was bitten by a dog.
Which vaccine should be injected in her to prevent infection?
A. Polio
B. Rabies
C. COVID
D. Tetanus
SAS21S091305
5 Which of these diseases can be spread by sexual contact?
A. AIDS
B. Malaria
C. Typhoid
D. Diarrhoea
SAS21S091306
6 Which of these can help to control chronic diseases?
Circle ‘Yes’ or ‘No’ for the correct response.
Can this help to control chronic diseases? Yes or No
No smoking Yes/No
No alcohol consumption Yes/No
No physical activity Yes/No
Rahul conducted a survey of four villages.
The table shows the indings of the survey.
Village Presence of toilets Drinking water
source
Village 1 no toilet pond
Village 2 toilet in each house tap
Village 3 toilet in each house pond
Village 4 few public toilets tap
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 51
Class 9 – Chapter 13
SAS21S091304
4 Riya was bitten by a dog.
Which vaccine should be injected in her to prevent infection?
A. Polio
B. Rabies
C. COVID
D. Tetanus
SAS21S091305
5 Which of these diseases can be spread by sexual contact?
A. AIDS
B. Malaria
C. Typhoid
D. Diarrhoea
SAS21S091306
6 Which of these can help to control chronic diseases?
Circle ‘Yes’ or ‘No’ for the correct response.
Can this help to control chronic diseases? Yes or No
No smoking Yes/No
No alcohol consumption Yes/No
No physical activity Yes/No
Rahul conducted a survey of four villages.
The table shows the indings of the survey.
Village Presence of toilets Drinking water
source
Village 1 no toilet pond
Village 2 toilet in each house tap
Village 3 toilet in each house pond
Village 4 few public toilets tap
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 51
Page 55
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 13
SAS21S091307
7 In which village is the spread of waterborne diseases likely to be the slowest?
A. Village 1
B. Village 2
C. Village 3
D. Village 4
SAS21S091308
8 Why is untreated river water not safe for drinking?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The table shows the location of the four villages.
Village 1 Village 2 Village 3 Village 4
near a forest near a sea beach near a cement factory near a farmland
SAS21S091309
9 People of which village has the highest chance of developing lung diseases?
A. Village 1
B. Village 2
C. Village 3
D. Village 4
SAS21S091310
10 Saba often falls ill with common cold.
What could be a likely reason for this?
A. She is underweight.
B. She swims regularly.
C. She has weak immunity.
D. She washes clothes regularly.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 52
Class 9 – Chapter 13
SAS21S091307
7 In which village is the spread of waterborne diseases likely to be the slowest?
A. Village 1
B. Village 2
C. Village 3
D. Village 4
SAS21S091308
8 Why is untreated river water not safe for drinking?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
The table shows the location of the four villages.
Village 1 Village 2 Village 3 Village 4
near a forest near a sea beach near a cement factory near a farmland
SAS21S091309
9 People of which village has the highest chance of developing lung diseases?
A. Village 1
B. Village 2
C. Village 3
D. Village 4
SAS21S091310
10 Saba often falls ill with common cold.
What could be a likely reason for this?
A. She is underweight.
B. She swims regularly.
C. She has weak immunity.
D. She washes clothes regularly.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 52
Page 56
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 14
Natural Resources
The diagram shows the nitrogen cycle.
SAS21S091401
1 In which form is nitrogen assimilated by plants?
A. Ammonia
B. Nitrite
C. Nitrate
D. Nitrogen
SAS21S091402
2 In which of these processes is dead organic matter broken down?
A. Nitrogen ixation
B. Ammoni ication
C. Nitri ication
D. Denitri ication
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 53
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 14
Natural Resources
The diagram shows the nitrogen cycle.
SAS21S091401
1 In which form is nitrogen assimilated by plants?
A. Ammonia
B. Nitrite
C. Nitrate
D. Nitrogen
SAS21S091402
2 In which of these processes is dead organic matter broken down?
A. Nitrogen ixation
B. Ammoni ication
C. Nitri ication
D. Denitri ication
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 53
Page 57
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 14
The diagram shows the basic stages in the oxygen cycle.
SAS21S091403
3 Which of these can be concluded from the diagram?
Circle ‘Yes’ or ‘No’ for the correct response.
Can this be concluded from the diagram? Yes or No
Deforestation will seriously affect the oxygen cycle. Yes/No
Animals release oxygen into the atmosphere. Yes/No
Oxygen level in the atmosphere is higher at night. Yes/No
SAS21S091404
4 Will the oxygen cycle discontinue if all industries of a town are shut down?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 54
Class 9 – Chapter 14
The diagram shows the basic stages in the oxygen cycle.
SAS21S091403
3 Which of these can be concluded from the diagram?
Circle ‘Yes’ or ‘No’ for the correct response.
Can this be concluded from the diagram? Yes or No
Deforestation will seriously affect the oxygen cycle. Yes/No
Animals release oxygen into the atmosphere. Yes/No
Oxygen level in the atmosphere is higher at night. Yes/No
SAS21S091404
4 Will the oxygen cycle discontinue if all industries of a town are shut down?
Explain your answer.
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 54
Page 58
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 14
The pictures show the ozone layer above Antarctica in different years.
The dark shade represents a hole in the ozone layer.
SAS21S091405
5 What can be concluded about the hole in the ozone layer from the pictures?
A. It was the largest in 1991.
B. It has decreased after 1986.
C. It started developing in 1979.
D. It has increased from 1986 to 1996.
SAS21S091406
6 Which of these will occur with the reduction of ozone layer in the upper atmosphere?
A. Surface temperature of the Earth will increase.
B. Amount of annual rainfall will decrease globally.
C. Percentage of oxygen in the atmosphere will decrease.
D. Harmful radiations from the Sun will reach the Earth’s surface.
The diagram shows the stages in the carbon cycle.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 55
Class 9 – Chapter 14
The pictures show the ozone layer above Antarctica in different years.
The dark shade represents a hole in the ozone layer.
SAS21S091405
5 What can be concluded about the hole in the ozone layer from the pictures?
A. It was the largest in 1991.
B. It has decreased after 1986.
C. It started developing in 1979.
D. It has increased from 1986 to 1996.
SAS21S091406
6 Which of these will occur with the reduction of ozone layer in the upper atmosphere?
A. Surface temperature of the Earth will increase.
B. Amount of annual rainfall will decrease globally.
C. Percentage of oxygen in the atmosphere will decrease.
D. Harmful radiations from the Sun will reach the Earth’s surface.
The diagram shows the stages in the carbon cycle.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 55
Page 59
Curriculum Aligned Competency Based Test Items Science
Class 9 – Chapter 14
SAS21S091407
7 Which of these is true about the carbon cycle?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this true about the carbon cycle? Yes or No
Plants absorb carbon dioxide from the atmosphere. Yes/No
Carbon dioxide enters the living world through respiration. Yes/No
Carbon dioxide level in the atmosphere remains the same during day and night. Yes/No
SAS21S091408
8 How are fossil fuels formed?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S091409
9 Which of these is a greenhouse gas?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Carbon dioxide
SAS21S091410
10 How does planting of trees on riverbanks prevent soil erosion?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 56
Class 9 – Chapter 14
SAS21S091407
7 Which of these is true about the carbon cycle?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this true about the carbon cycle? Yes or No
Plants absorb carbon dioxide from the atmosphere. Yes/No
Carbon dioxide enters the living world through respiration. Yes/No
Carbon dioxide level in the atmosphere remains the same during day and night. Yes/No
SAS21S091408
8 How are fossil fuels formed?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
SAS21S091409
9 Which of these is a greenhouse gas?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Carbon dioxide
SAS21S091410
10 How does planting of trees on riverbanks prevent soil erosion?
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 56
Page 60
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 15
Improvement In Food Resources
The diagram shows the crop harvesting pattern followed by a farmer.
Bed 1, Bed 2 and Bed 3 are different parts of the farm.
SAS21S091501
1 What is the common term used for this pattern of crop harvesting?
A. Crop rotation
B. Intercropping
C. Mixed cropping
D. Organic farming
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 57
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 9 – Chapter 15
Improvement In Food Resources
The diagram shows the crop harvesting pattern followed by a farmer.
Bed 1, Bed 2 and Bed 3 are different parts of the farm.
SAS21S091501
1 What is the common term used for this pattern of crop harvesting?
A. Crop rotation
B. Intercropping
C. Mixed cropping
D. Organic farming
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 57
Document Details
| Board / Org | Aglasem |
| Exam | Class 9 |
| Type | Question Bank |
| Pages | 113 |
| Updated | 24 Sep 2026 |