Competency Based Questions Class 7 Science
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Page 1
Curriculum Aligned
Competency Based Test Items
Science
Class - 7
Central Board of Secondary Education
Competency Based Test Items
Science
Class - 7
Central Board of Secondary Education
Page 2
Table of Contents
Test Item
1 Nutrition in Plants..............................................................................................................03
2 Nutrition in Animals ..........................................................................................................07
3 Fibre to Fabric ...................................................................................................................10
4 Heat ...................................................................................................................................14
5 Acids, Bases and Salts .......................................................................................................18
6 Physical and Chemical Changes.........................................................................................22
7 Weather, Climate and Adaptations of Animals to Climate..................................................26
8 Winds, Storms and Cyclones .............................................................................................30
9 Soil ....................................................................................................................................34
10 Respiration in Organisms...................................................................................................39
11 Transportation in Animals and Plants ................................................................................43
12 Reproduction in Plants.......................................................................................................47
13 Motion and Time ...............................................................................................................51
14 Electric Current and its Effects ..........................................................................................55
15 Light ..................................................................................................................................59
16 Water: A Precious Resource...............................................................................................64
17 Forests: Our Lifeline..........................................................................................................68
18 Wastewater Story ...............................................................................................................72
Test Item
1 Nutrition in Plants..............................................................................................................03
2 Nutrition in Animals ..........................................................................................................07
3 Fibre to Fabric ...................................................................................................................10
4 Heat ...................................................................................................................................14
5 Acids, Bases and Salts .......................................................................................................18
6 Physical and Chemical Changes.........................................................................................22
7 Weather, Climate and Adaptations of Animals to Climate..................................................26
8 Winds, Storms and Cyclones .............................................................................................30
9 Soil ....................................................................................................................................34
10 Respiration in Organisms...................................................................................................39
11 Transportation in Animals and Plants ................................................................................43
12 Reproduction in Plants.......................................................................................................47
13 Motion and Time ...............................................................................................................51
14 Electric Current and its Effects ..........................................................................................55
15 Light ..................................................................................................................................59
16 Water: A Precious Resource...............................................................................................64
17 Forests: Our Lifeline..........................................................................................................68
18 Wastewater Story ...............................................................................................................72
Page 3
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 1
Nutrition in Plants
The picture below shows the process through which green plants make their food.
X, Y and Z are three different components of the process.
The direction of arrows show what is absorbed and what is released by the plant.
For example, sunlight is absorbed by the plant.
sunlight
x carbohydrate + Y
plant
z
SAS21S070101
1 The equation below shows how green plants make their own food.
sunlight
Carbon dioxide + water Carbohydrate + oxygen
chlorophyll
What does X, Y and Z stand for in the picture above?
X Y Z
A. Carbon dioxide Water Oxygen
B. Water Oxygen Carbon Dioxide
C. Oxygen Water Carbon Dioxide
D. Carbon Dioxide Oxygen water
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 7 – Chapter 1
Nutrition in Plants
The picture below shows the process through which green plants make their food.
X, Y and Z are three different components of the process.
The direction of arrows show what is absorbed and what is released by the plant.
For example, sunlight is absorbed by the plant.
sunlight
x carbohydrate + Y
plant
z
SAS21S070101
1 The equation below shows how green plants make their own food.
sunlight
Carbon dioxide + water Carbohydrate + oxygen
chlorophyll
What does X, Y and Z stand for in the picture above?
X Y Z
A. Carbon dioxide Water Oxygen
B. Water Oxygen Carbon Dioxide
C. Oxygen Water Carbon Dioxide
D. Carbon Dioxide Oxygen water
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 03
Page 4
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 1
SAS21S070102
2 Radhika wants to ind out whether a purple plant can make its own food. She keeps a purple plant in
sunlight for four days.
Which other type of coloured plant should Radhika keep as part of her study to compare with the
purple plant?
purple leaf
SAS21S070103
3 We often ind green slimy layers on the surface of ponds. The layers are formed by tiny organisms that
make their own food. Which of these is/are true about the organisms?
Circle ‘Yes’ or ‘No’ for each row.
Is the statement about the organisms true? Yes or No
They contain chlorophyll. Yes/No
They release oxygen. Yes/No
They require sunlight for making food. Yes/No
Jessy wanted to ind out the conditions that best support the rotting of bread. The growth of
coloured luffy patches on the surface of bread con irms rotting. She kept four bread slices in
different conditions for ive days. The table below shows Jessy’s indings after ive days.
Bread slice Where the slice is placed Number of coloured luffy
patches after ive days
Slice 1 On wet cotton at 5 ℃ Two patches
Slice 2 On a dry plate at 30 ℃ Six patches
Slice 3 On wet cotton at 30 ℃ Ten patches
Slice 4 On a dry plate at 5 ℃ No patch
SAS21S070104
4 Which microorganism forms the coloured luffy patches on the bread?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 04
Class 7 − Chapter 1
SAS21S070102
2 Radhika wants to ind out whether a purple plant can make its own food. She keeps a purple plant in
sunlight for four days.
Which other type of coloured plant should Radhika keep as part of her study to compare with the
purple plant?
purple leaf
SAS21S070103
3 We often ind green slimy layers on the surface of ponds. The layers are formed by tiny organisms that
make their own food. Which of these is/are true about the organisms?
Circle ‘Yes’ or ‘No’ for each row.
Is the statement about the organisms true? Yes or No
They contain chlorophyll. Yes/No
They release oxygen. Yes/No
They require sunlight for making food. Yes/No
Jessy wanted to ind out the conditions that best support the rotting of bread. The growth of
coloured luffy patches on the surface of bread con irms rotting. She kept four bread slices in
different conditions for ive days. The table below shows Jessy’s indings after ive days.
Bread slice Where the slice is placed Number of coloured luffy
patches after ive days
Slice 1 On wet cotton at 5 ℃ Two patches
Slice 2 On a dry plate at 30 ℃ Six patches
Slice 3 On wet cotton at 30 ℃ Ten patches
Slice 4 On a dry plate at 5 ℃ No patch
SAS21S070104
4 Which microorganism forms the coloured luffy patches on the bread?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 04
Page 5
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 1
SAS21S070105
5 Which condition can best prevent rotting for a long time?
A. Cold and Humid
B. Warm and Dry
C. Warm and Humid
D. Cold and Dry
Australian Sundew is a type of plant that has green stems and green leaves. It traps insects with its
sticky tentacles. The plant sucks the nutrients from the body of its prey.
tentacle
green
leaf
green
stem
SAS21S070106
6 Australian Sundew is a part autotroph and part heterotroph.
Write two features of the plant that support this.
SAS21S070107
7 Which of the following organisms obtain nutrients from dead and decaying organisms?
A. Algae
B. Mushroom
C. Rose plant
D. Banyan tree
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 05
Class 7 − Chapter 1
SAS21S070105
5 Which condition can best prevent rotting for a long time?
A. Cold and Humid
B. Warm and Dry
C. Warm and Humid
D. Cold and Dry
Australian Sundew is a type of plant that has green stems and green leaves. It traps insects with its
sticky tentacles. The plant sucks the nutrients from the body of its prey.
tentacle
green
leaf
green
stem
SAS21S070106
6 Australian Sundew is a part autotroph and part heterotroph.
Write two features of the plant that support this.
SAS21S070107
7 Which of the following organisms obtain nutrients from dead and decaying organisms?
A. Algae
B. Mushroom
C. Rose plant
D. Banyan tree
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 05
Page 6
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 1
The picture below shows thread-like fungi that live near some plants. The fungi wrap around and
pierce the plant’s roots. It helps the plant to get minerals and water from the soil. The plant
provides carbohydrates to the fungi.
thread like
fungi
plant roots
SAS21S070108
8 X and Y show the direction of low of substances from one source to another.
Which substances move in:
• X direction
• Y direction
SAS21S070109
9 Parasite is an organism that lives in or on the body of another organism. It receives energy and
nutrients from the host organism. Parasite does not give anything in return to its host. Is the group of
fungi shown in the picture a type of parasite? Explain your answer.
SAS21S070110
10 The sun provides energy for all living things. Gurmeet wrote two statements to explain the above fact.
Statement 1: All autotrophs prepare their own food in the presence of sunlight.
Statement 2: ______________________________________________
What of the following should be Statement 2?
A. All autotrophs are plants
B. All heterotrophs are animals
C. All autotrophs contain chlorophyll pigment
D. All heterotrophs get energy directly or indirectly from autotrophs
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 06
Class 7 − Chapter 1
The picture below shows thread-like fungi that live near some plants. The fungi wrap around and
pierce the plant’s roots. It helps the plant to get minerals and water from the soil. The plant
provides carbohydrates to the fungi.
thread like
fungi
plant roots
SAS21S070108
8 X and Y show the direction of low of substances from one source to another.
Which substances move in:
• X direction
• Y direction
SAS21S070109
9 Parasite is an organism that lives in or on the body of another organism. It receives energy and
nutrients from the host organism. Parasite does not give anything in return to its host. Is the group of
fungi shown in the picture a type of parasite? Explain your answer.
SAS21S070110
10 The sun provides energy for all living things. Gurmeet wrote two statements to explain the above fact.
Statement 1: All autotrophs prepare their own food in the presence of sunlight.
Statement 2: ______________________________________________
What of the following should be Statement 2?
A. All autotrophs are plants
B. All heterotrophs are animals
C. All autotrophs contain chlorophyll pigment
D. All heterotrophs get energy directly or indirectly from autotrophs
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 06
Page 7
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 2
Nutrition in Animals
The picture shows arrangement of teeth in the upper jaw of an animal.
incisors
canines
sunlight premolars
plant molars
SAS21S070201
1 Which animal has a similar teeth arrangement?
A. Deer
B. Dog
C. Rabbit
D. Buffalo
SAS21S070202
2 Which set of teeth is used for biting into food?
A. Incisors
B. Canines
C. Premolars
D. Molars
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 07
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 2
Nutrition in Animals
The picture shows arrangement of teeth in the upper jaw of an animal.
incisors
canines
sunlight premolars
plant molars
SAS21S070201
1 Which animal has a similar teeth arrangement?
A. Deer
B. Dog
C. Rabbit
D. Buffalo
SAS21S070202
2 Which set of teeth is used for biting into food?
A. Incisors
B. Canines
C. Premolars
D. Molars
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 07
Page 8
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 2
SAS21S070103
3 Which of these is a part of the digestive system?
Circle ‘Yes’ or ‘No’ for each row.
Is this a part of the digestive system? Yes or No
Teeth Yes/No
Liver Yes/No
Rectum Yes/No
SAS21S070204
4 A baby passed watery stool for two days. The doctor suggested oral rehydration solution (ORS) for the
baby. How would the ORS help the baby?
A. It would help in digesting food
B. It would kill the bacteria that caused the infection
C. It would prevent water from moving out of the body
D. It would replace the luids and minerals lost from the body
SAS21S070205
5 All bacteria present in the digestive system are not harmful. Explain how bacteria present in the
digestive system of cows help in the digestion of food.
SAS21S070206
6 Where does digestion of food start in the human digestive system?
A. Mouth
B. Stomach
C. Oesophagus
D. Small intestine
Amoeba uses inger-like projections to capture food particles.
The picture shows the irst step of the process.
finger-like projection
nucleus food particle
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 08
Class 7 − Chapter 2
SAS21S070103
3 Which of these is a part of the digestive system?
Circle ‘Yes’ or ‘No’ for each row.
Is this a part of the digestive system? Yes or No
Teeth Yes/No
Liver Yes/No
Rectum Yes/No
SAS21S070204
4 A baby passed watery stool for two days. The doctor suggested oral rehydration solution (ORS) for the
baby. How would the ORS help the baby?
A. It would help in digesting food
B. It would kill the bacteria that caused the infection
C. It would prevent water from moving out of the body
D. It would replace the luids and minerals lost from the body
SAS21S070205
5 All bacteria present in the digestive system are not harmful. Explain how bacteria present in the
digestive system of cows help in the digestion of food.
SAS21S070206
6 Where does digestion of food start in the human digestive system?
A. Mouth
B. Stomach
C. Oesophagus
D. Small intestine
Amoeba uses inger-like projections to capture food particles.
The picture shows the irst step of the process.
finger-like projection
nucleus food particle
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 08
Page 9
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 2
SAS21S070207
7 Which of these is the next step of capturing food?
A. C.
B. D.
SAS21S070208
8 What are the inger-like projections called?
SAS21S070209
9 An amoeba ingests a food particle.
Which of these shows the correct sequence of nutrition in the amoeba?
A. Egestion Digestion Assimilation Absorption
B. Digestion Absorption Assimilation Egestion
C. Digestion Assimilation Absorption Egestion
D. Egestion Digestion Assimilation Absorption
SAS2SAS21S070210
10 What are proteins broken down into?
A. Glucose
B. Glycerol
C. Fatty acids
D. Amino acids
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 09
Class 7 − Chapter 2
SAS21S070207
7 Which of these is the next step of capturing food?
A. C.
B. D.
SAS21S070208
8 What are the inger-like projections called?
SAS21S070209
9 An amoeba ingests a food particle.
Which of these shows the correct sequence of nutrition in the amoeba?
A. Egestion Digestion Assimilation Absorption
B. Digestion Absorption Assimilation Egestion
C. Digestion Assimilation Absorption Egestion
D. Egestion Digestion Assimilation Absorption
SAS2SAS21S070210
10 What are proteins broken down into?
A. Glucose
B. Glycerol
C. Fatty acids
D. Amino acids
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 09
Page 10
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 3
Fibre to Fabric
The table shows the details of different steps in the production of wool from sheep.
The steps listed in the table are not in the correct order.
Steps Details
Step W Wash the sheep skin with hair in water tanks to remove grease, dust and dirt.
Step X Straighten, comb and roll the ibres into yarns by machine.
Step Y Shave a thin layer of skin with hair from the sheep.
Step Z Remove small luffy ibres from the washed hair by machine.
SAS21S070301
1 What is the correct order of the steps?
A. Step Y → Step X → Step W → Step Z
B. Step W → Step Z → Step X → Step Y
C. Step Y → Step W → Step Z → Step X
D. Step X → Step Y → Step W → Step Z
SAS21S070302
2 Before which step should the woollen ibres be colour dyed?
A. Step W
B. Step X
C. Step Y
D. Step Z
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 10
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 3
Fibre to Fabric
The table shows the details of different steps in the production of wool from sheep.
The steps listed in the table are not in the correct order.
Steps Details
Step W Wash the sheep skin with hair in water tanks to remove grease, dust and dirt.
Step X Straighten, comb and roll the ibres into yarns by machine.
Step Y Shave a thin layer of skin with hair from the sheep.
Step Z Remove small luffy ibres from the washed hair by machine.
SAS21S070301
1 What is the correct order of the steps?
A. Step Y → Step X → Step W → Step Z
B. Step W → Step Z → Step X → Step Y
C. Step Y → Step W → Step Z → Step X
D. Step X → Step Y → Step W → Step Z
SAS21S070302
2 Before which step should the woollen ibres be colour dyed?
A. Step W
B. Step X
C. Step Y
D. Step Z
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 10
Page 11
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 3
SAS21S070303
3 Sorters in the wool industry are sometimes infected with anthrax disease.
Which statement correctly explains the reason for this?
Circle ‘Yes’ or ‘No’ for the correct response.
Statement Yes or No
Clothes worn by sorters attract Anthrax bacteria. Yes/No
Chemicals used in wool processing help in the growth of Anthrax bacteria. Yes/No
Sheep hair is often infected by Anthrax bacteria. Yes/No
SAS21S070304
4 Some types of sheep are commonly found in the Himalayas.
Herders shave their skin layers only in summers.
What could be the likely reason for doing this?
SAS21S070305
5 How do woollen clothes keep us warm in winters?
Explain your answer.
The diagram below shows the different stages in the life cycle of a silk moth.
egg
adult moth
LIFE CYCLE OF SILK MOTH
cocoon
larva
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 11
Class 7 − Chapter 3
SAS21S070303
3 Sorters in the wool industry are sometimes infected with anthrax disease.
Which statement correctly explains the reason for this?
Circle ‘Yes’ or ‘No’ for the correct response.
Statement Yes or No
Clothes worn by sorters attract Anthrax bacteria. Yes/No
Chemicals used in wool processing help in the growth of Anthrax bacteria. Yes/No
Sheep hair is often infected by Anthrax bacteria. Yes/No
SAS21S070304
4 Some types of sheep are commonly found in the Himalayas.
Herders shave their skin layers only in summers.
What could be the likely reason for doing this?
SAS21S070305
5 How do woollen clothes keep us warm in winters?
Explain your answer.
The diagram below shows the different stages in the life cycle of a silk moth.
egg
adult moth
LIFE CYCLE OF SILK MOTH
cocoon
larva
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 11
Page 12
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 3
SAS21S070306
6 Which statement can be concluded from the diagram?
Circle ‘Yes’ or ‘No’ for the correct response.
Statement Yes or No
There are four stages in the life cycle of a silk moth. Yes/No
The adult stage looks completely different from the younger stages. Yes/No
Silk moth larva hatches from a cocoon. Yes/No
Tanu has four types of plants in her garden.
She wanted to ind out which plant a silk moth larva would prefer to eat the most.
Tanu placed a silk moth larva along with 5 leaves from each plant on a tray.
leaf type 4 leaf type 2
silk moth larva
leaf type 3 leaf type 1
The table below shows what she found after a week.
Leaf 1 Leaf 2 Leaf 3 Leaf 4
Number of leaves left on the tray 5 3 0 5
SAS21S070307
7 Which type of plant leaf did the silk moth larva prefer the most?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 12
Class 7 − Chapter 3
SAS21S070306
6 Which statement can be concluded from the diagram?
Circle ‘Yes’ or ‘No’ for the correct response.
Statement Yes or No
There are four stages in the life cycle of a silk moth. Yes/No
The adult stage looks completely different from the younger stages. Yes/No
Silk moth larva hatches from a cocoon. Yes/No
Tanu has four types of plants in her garden.
She wanted to ind out which plant a silk moth larva would prefer to eat the most.
Tanu placed a silk moth larva along with 5 leaves from each plant on a tray.
leaf type 4 leaf type 2
silk moth larva
leaf type 3 leaf type 1
The table below shows what she found after a week.
Leaf 1 Leaf 2 Leaf 3 Leaf 4
Number of leaves left on the tray 5 3 0 5
SAS21S070307
7 Which type of plant leaf did the silk moth larva prefer the most?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 12
Page 13
Curriculum Aligned Competency Based Test Items Science
Class 7 − Chapter 3
SAS21S070308
8 How can Tanu be sure of the results of her activity?
A. By repeating the activity with larger leaves
B. By repeating the activity for a single day only
C. By repeating the activity with 4 silkworm larvae
D. By repeating the activity with new types of leaves
Joseph wanted to check how long silk moth larvae took to develop into cocoons.
He took 4 newly hatched larvae and plant leaves.
The table below shows how long each larva took to develop into a cocoon.
Larva 1 Larva 2 Larva 3 Larva 4
Time taken by the larva to develop into a
34 days 30 days 32 days 31 days
cocoon
SAS21S070309
9 Which larva took the longest time to develop into a cocoon?
A. Larva 1
B. Larva 2
C. Larva 3
D. Larva 4
SAS21S070310
10 Why are cocoons boiled before reeling silk threads in machines?
A. It strengthens the silk ibres.
B. It lightens the colour of silk ibres.
C. It increases the amount of silk ibres.
D. It separates the silk ibres from the cocoons.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 13
Class 7 − Chapter 3
SAS21S070308
8 How can Tanu be sure of the results of her activity?
A. By repeating the activity with larger leaves
B. By repeating the activity for a single day only
C. By repeating the activity with 4 silkworm larvae
D. By repeating the activity with new types of leaves
Joseph wanted to check how long silk moth larvae took to develop into cocoons.
He took 4 newly hatched larvae and plant leaves.
The table below shows how long each larva took to develop into a cocoon.
Larva 1 Larva 2 Larva 3 Larva 4
Time taken by the larva to develop into a
34 days 30 days 32 days 31 days
cocoon
SAS21S070309
9 Which larva took the longest time to develop into a cocoon?
A. Larva 1
B. Larva 2
C. Larva 3
D. Larva 4
SAS21S070310
10 Why are cocoons boiled before reeling silk threads in machines?
A. It strengthens the silk ibres.
B. It lightens the colour of silk ibres.
C. It increases the amount of silk ibres.
D. It separates the silk ibres from the cocoons.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 13
Page 14
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 4
Heat
Reema pours hot water into two types of cups. One cup is made of ceramic and the other is made of
paper. She records the temperature of water in the cups after 5 minutes.
ceramic Paper cup
Temperature of the Temperature of water in the
hot water cup after 5 minutes
Ceramic cup 90℃ 75℃
Paper cup 90℃ 60℃
SAS21S070401
1 What is Reema testing?
A. Is paper a bad conductor of heat?
B. Does the shape of a cup prevent loss of heat?
C. Does the colour of a cup prevent loss of heat?
D. Is paper a better conductor of heat than ceramic?
SAS21S070402
2 Would there be a change in the temperature readings if both the cups were covered with a lid? Explain
your answer.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 14
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 4
Heat
Reema pours hot water into two types of cups. One cup is made of ceramic and the other is made of
paper. She records the temperature of water in the cups after 5 minutes.
ceramic Paper cup
Temperature of the Temperature of water in the
hot water cup after 5 minutes
Ceramic cup 90℃ 75℃
Paper cup 90℃ 60℃
SAS21S070401
1 What is Reema testing?
A. Is paper a bad conductor of heat?
B. Does the shape of a cup prevent loss of heat?
C. Does the colour of a cup prevent loss of heat?
D. Is paper a better conductor of heat than ceramic?
SAS21S070402
2 Would there be a change in the temperature readings if both the cups were covered with a lid? Explain
your answer.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 14
Page 15
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 4
SAS21S070403
3 Which igure shows the correct way of reading the temperature on a thermometer?
A. B.
C. D.
a cup of hot tea
SAS21S070404
4 Which process causes the air above the hot tea to get heated?
A. Conduction
B. Evaporation
C. Convection
D. Radiation
The thermometer shows the indoor temperature of a house.
Roof Surface
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 15
Class 7 – Chapter 4
SAS21S070403
3 Which igure shows the correct way of reading the temperature on a thermometer?
A. B.
C. D.
a cup of hot tea
SAS21S070404
4 Which process causes the air above the hot tea to get heated?
A. Conduction
B. Evaporation
C. Convection
D. Radiation
The thermometer shows the indoor temperature of a house.
Roof Surface
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 15
Page 16
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 4
SAS21S070405
5 What is the indoor temperature of the house in degree Celsius?
SAS21S070406
6 What should be the colour of the roof surface to keep the house warm?
A. Silver
B. Yellow
C. Sky blue
D. Dark brown
Fatima keeps four boxes containing equal sized butter cubes under the sun.
The boxes are of the same shape and size but made of different materials.
Fatima notes how long the butter cubes in each box take to melt.
Box Time the butter cubes take to melt
Box 1 12 minutes
Box 2 16 minutes
Box 3 7 minutes
Box 4 8 minutes
SAS21S070407
7 Which box is the best conductor of heat?
A. Box 1
B. Box 2
C. Box 3 6
D. Box 4
SAS21S070408
8 What can Fatima do to con irm the results of her activity?
A. Repeat the activity with boxes of different sizes
B. Repeat the activity keeping all conditions the same
C. Repeat the activity with boxes made of same material
D. Repeat the activity with boxes containing different sized butter cubes
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 16
Class 7 – Chapter 4
SAS21S070405
5 What is the indoor temperature of the house in degree Celsius?
SAS21S070406
6 What should be the colour of the roof surface to keep the house warm?
A. Silver
B. Yellow
C. Sky blue
D. Dark brown
Fatima keeps four boxes containing equal sized butter cubes under the sun.
The boxes are of the same shape and size but made of different materials.
Fatima notes how long the butter cubes in each box take to melt.
Box Time the butter cubes take to melt
Box 1 12 minutes
Box 2 16 minutes
Box 3 7 minutes
Box 4 8 minutes
SAS21S070407
7 Which box is the best conductor of heat?
A. Box 1
B. Box 2
C. Box 3 6
D. Box 4
SAS21S070408
8 What can Fatima do to con irm the results of her activity?
A. Repeat the activity with boxes of different sizes
B. Repeat the activity keeping all conditions the same
C. Repeat the activity with boxes made of same material
D. Repeat the activity with boxes containing different sized butter cubes
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 16
Page 17
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 4
SAS21S070409
9 Fatima repeated the activity with each box wrapped in a thick layer of newspaper. Which of the
following is likely to have happened?
A. The butter cubes in the boxes would not have melted.
B. The butter cubes in the boxes would have melted faster.
C. The readings in the table would have remained the same.
D. The butter cubes in each box would have taken longer to melt.
Double-layered paper cups keep coffee hot for a longer time than single layered cups.
SAS21S070410
10 Will the double-layered cups also keep ice cream shakes cold for a longer time?
Explain your answer.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 17
Class 7 – Chapter 4
SAS21S070409
9 Fatima repeated the activity with each box wrapped in a thick layer of newspaper. Which of the
following is likely to have happened?
A. The butter cubes in the boxes would not have melted.
B. The butter cubes in the boxes would have melted faster.
C. The readings in the table would have remained the same.
D. The butter cubes in each box would have taken longer to melt.
Double-layered paper cups keep coffee hot for a longer time than single layered cups.
SAS21S070410
10 Will the double-layered cups also keep ice cream shakes cold for a longer time?
Explain your answer.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 17
Page 18
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 5
Acids, Bases and Salts
China rose is a natural indicator of acids and bases.
The lower’s petals are put in warm water for an hour.
The water, after one hour can be used as an indicator.
It is light pink in neutral conditions.
It turns green in basic conditions and dark pink in acidic conditions.
Zeenat takes 10 ml of three colourless liquids in separate test tubes.
She adds 5 drops of china rose indicator to each test tube.
The pictures show the colour of the liquid in each test tube after the addition of indicator.
SAS21S070501
1 Which test tube contains liquid soap?
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 7 – Chapter 5
Acids, Bases and Salts
China rose is a natural indicator of acids and bases.
The lower’s petals are put in warm water for an hour.
The water, after one hour can be used as an indicator.
It is light pink in neutral conditions.
It turns green in basic conditions and dark pink in acidic conditions.
Zeenat takes 10 ml of three colourless liquids in separate test tubes.
She adds 5 drops of china rose indicator to each test tube.
The pictures show the colour of the liquid in each test tube after the addition of indicator.
SAS21S070501
1 Which test tube contains liquid soap?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 18
Page 19
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 5
SAS21S070502
2 Why are china rose petals put in warm water to make the indicator?
A. To darken the colour of the petals
B. To keep the petals fresh for a long time
C. To destroy the germs present on the petals
D. To make the chemicals in the petals dissolve faster
SAS21S070503
3 Why did Zeenat add the same amount of indicator to the three test tubes?
Pema wants to do an activity with hydrochloric acid and lime water (base).
Most acids and bases can damage human skin.
SAS21S070504
4 Which step must she follow during the activity to ensure safety?
A. Untie her hair
B. Wear gloves
C. Remove her shoes
D. Wear a shirt with short sleeves
SAS21S070505
5 Lime water is a base.
Which of the following statements is true for lime water?
Circle ‘Yes’ or ‘No’ to mark your response.
Is the statement true for lime water? Yes or No
Lime water is sour in taste. Yes/No
Lime water is slippery to touch. Yes/No
Lime water turns litmus paper blue Yes/No
Soha mixed equal amounts of two colourless liquids in a test tube.
She observed the following:
Ÿ The colour of the liquids did not change.
Ÿ No residue was formed in the test tube.
Ÿ The test tube got hot.
Ÿ No gas bubbles were formed.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 19
Class 7 – Chapter 5
SAS21S070502
2 Why are china rose petals put in warm water to make the indicator?
A. To darken the colour of the petals
B. To keep the petals fresh for a long time
C. To destroy the germs present on the petals
D. To make the chemicals in the petals dissolve faster
SAS21S070503
3 Why did Zeenat add the same amount of indicator to the three test tubes?
Pema wants to do an activity with hydrochloric acid and lime water (base).
Most acids and bases can damage human skin.
SAS21S070504
4 Which step must she follow during the activity to ensure safety?
A. Untie her hair
B. Wear gloves
C. Remove her shoes
D. Wear a shirt with short sleeves
SAS21S070505
5 Lime water is a base.
Which of the following statements is true for lime water?
Circle ‘Yes’ or ‘No’ to mark your response.
Is the statement true for lime water? Yes or No
Lime water is sour in taste. Yes/No
Lime water is slippery to touch. Yes/No
Lime water turns litmus paper blue Yes/No
Soha mixed equal amounts of two colourless liquids in a test tube.
She observed the following:
Ÿ The colour of the liquids did not change.
Ÿ No residue was formed in the test tube.
Ÿ The test tube got hot.
Ÿ No gas bubbles were formed.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 19
Page 20
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 5
SAS21S070506
6 Soha concluded that a chemical change took place in the test tube.
Which change con irms her conclusion?
A. The test tube got hot.
B. No residue was formed.
C. No gas bubbles were formed.
D. The colour of the liquids did not change.
SAS21S070507
7 Complete the following chemical reaction.
Acid+Base → X+Y
What does X and Y stand for?
X = __________________ Y = _____________________
The picture shows how acid rain occurs and what its effects are.
SAS21S070508
8 Which of these contributes to acid rain?
Circle ‘Yes’ or ‘No’ to mark your response.
Does this contribute to acid rain? Yes/No
Emission by vehicles Yes/No
Emission by factories Yes/No
Photosynthesis by plants Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 20
Class 7 – Chapter 5
SAS21S070506
6 Soha concluded that a chemical change took place in the test tube.
Which change con irms her conclusion?
A. The test tube got hot.
B. No residue was formed.
C. No gas bubbles were formed.
D. The colour of the liquids did not change.
SAS21S070507
7 Complete the following chemical reaction.
Acid+Base → X+Y
What does X and Y stand for?
X = __________________ Y = _____________________
The picture shows how acid rain occurs and what its effects are.
SAS21S070508
8 Which of these contributes to acid rain?
Circle ‘Yes’ or ‘No’ to mark your response.
Does this contribute to acid rain? Yes/No
Emission by vehicles Yes/No
Emission by factories Yes/No
Photosynthesis by plants Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 20
Page 21
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 5
SAS21S070509
9 Which of the following is correct about the effects of acid rain?
Select the correct row.
Acid rain damages some crops Acid rain kills some aquatic animals
No No
No Yes
Yes No
No Nes
SAS21S070510
10 Anu re-visited a historical monument after 10 years.
She noticed that the white monument had turned yellowish.
Which event is most likely to have caused the change in colour of the monument?
A. Flood
B. Drought
C. Acid rain
D. Thunderstorm
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 21
Class 7 – Chapter 5
SAS21S070509
9 Which of the following is correct about the effects of acid rain?
Select the correct row.
Acid rain damages some crops Acid rain kills some aquatic animals
No No
No Yes
Yes No
No Nes
SAS21S070510
10 Anu re-visited a historical monument after 10 years.
She noticed that the white monument had turned yellowish.
Which event is most likely to have caused the change in colour of the monument?
A. Flood
B. Drought
C. Acid rain
D. Thunderstorm
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 21
Page 22
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 6
Physical and Chemical Changes
An iron rod is heated till it becomes red-hot.
red-hot iron rod
SAS21S070601
1 Is heating of the iron rod a chemical change?
Select the correct response with explanation.
A. No, because no new substance is formed.
B. No, because the rod does not change its state.
C. Yes, because the iron rod turns red when heated.
D. Yes, because heat is absorbed by the iron rod.
SAS21S070602
2 Which of these is a physical change?
A. A lower turning into a fruit
B. A lizard changing its skin colour
C. A plant making food in sunlight
D. A butter ly larva changing into a cocoon
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 7 – Chapter 6
Physical and Chemical Changes
An iron rod is heated till it becomes red-hot.
red-hot iron rod
SAS21S070601
1 Is heating of the iron rod a chemical change?
Select the correct response with explanation.
A. No, because no new substance is formed.
B. No, because the rod does not change its state.
C. Yes, because the iron rod turns red when heated.
D. Yes, because heat is absorbed by the iron rod.
SAS21S070602
2 Which of these is a physical change?
A. A lower turning into a fruit
B. A lizard changing its skin colour
C. A plant making food in sunlight
D. A butter ly larva changing into a cocoon
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 22
Page 23
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 6
SAS21S070603
3 Iron gates are coated with a layer of zinc to protect them from rusting.
Which components in the air cause rusting?
SAS21M06N0304
4 Which of the following statements is true?
Circle ‘Yes’ or ‘No’ to mark your response.
Is this statement true? Yes/No
All metals rust. Yes/No
Rust is an oxide of iron. Yes/No
Rusting is a reversible change. Yes/No
Ramesh describes how roti is made in his house in 5 steps. Here are the 5 steps:
i Wheat grains are ground to make lour.
ii Flour is mixed with water to make soft dough.
iii Small balls of dough are lattened out with a rolling pin.
iv The lat round dough is cooked on a pan.
v The crisp roti is coated with a layer of butter.
SAS21S070605
5 In which of the above steps does a physical change take place and in which one does a chemical change
take place?
Physical change:_______________________________________________________________________________________________
Chemical change: _____________________________________________________________________________________________
SAS21S070606
6 Which of these is a chemical change?
Circle ‘Yes’ or ‘No’ to mark your response.
Is this a chemical change? Yes or No
Formation of clouds in the sky Yes/No
Drying of leaves Yes/No
A tadpole growing into a frog Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 23
Class 7 – Chapter 6
SAS21S070603
3 Iron gates are coated with a layer of zinc to protect them from rusting.
Which components in the air cause rusting?
SAS21M06N0304
4 Which of the following statements is true?
Circle ‘Yes’ or ‘No’ to mark your response.
Is this statement true? Yes/No
All metals rust. Yes/No
Rust is an oxide of iron. Yes/No
Rusting is a reversible change. Yes/No
Ramesh describes how roti is made in his house in 5 steps. Here are the 5 steps:
i Wheat grains are ground to make lour.
ii Flour is mixed with water to make soft dough.
iii Small balls of dough are lattened out with a rolling pin.
iv The lat round dough is cooked on a pan.
v The crisp roti is coated with a layer of butter.
SAS21S070605
5 In which of the above steps does a physical change take place and in which one does a chemical change
take place?
Physical change:_______________________________________________________________________________________________
Chemical change: _____________________________________________________________________________________________
SAS21S070606
6 Which of these is a chemical change?
Circle ‘Yes’ or ‘No’ to mark your response.
Is this a chemical change? Yes or No
Formation of clouds in the sky Yes/No
Drying of leaves Yes/No
A tadpole growing into a frog Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 23
Page 24
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 6
Sania adds a piece of magnesium ribbon to a test tube containing dilute hydrochloric acid.
She observes the following events.
i The test tube gets hot.
ii Gas bubbles are formed.
iii The magnesium ribbon dissolves in the acid.
SAS21S070607
7 Which observation(s) shows that a chemical change may have taken place in the test tube?
A. only i
B. only ii
C. i only ii
D. i only iii
After observing the above events, Sania adds a few more magnesium ribbons to the same test tube.
This time she observes tiny pieces of magnesium ribbon loating in the test tube. Sania thinks that
the reaction was not completed.
SAS21S070608
8 What does Sania need to do to complete the reaction?
A Heat the test tube
B Add more magnesium ribbons to the test tube
C Add more acid to the test tube
D Shake the test tube to mix magnesium ribbons and the acid
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 24
Class 7 – Chapter 6
Sania adds a piece of magnesium ribbon to a test tube containing dilute hydrochloric acid.
She observes the following events.
i The test tube gets hot.
ii Gas bubbles are formed.
iii The magnesium ribbon dissolves in the acid.
SAS21S070607
7 Which observation(s) shows that a chemical change may have taken place in the test tube?
A. only i
B. only ii
C. i only ii
D. i only iii
After observing the above events, Sania adds a few more magnesium ribbons to the same test tube.
This time she observes tiny pieces of magnesium ribbon loating in the test tube. Sania thinks that
the reaction was not completed.
SAS21S070608
8 What does Sania need to do to complete the reaction?
A Heat the test tube
B Add more magnesium ribbons to the test tube
C Add more acid to the test tube
D Shake the test tube to mix magnesium ribbons and the acid
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 24
Page 25
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 6
SAS21S070609
9 Sania later repeats her activity using magnesium powder instead of magnesium ribbon.
Will there be a change in her irst three observations? Explain your answer.
SAS21S070610
10 Which of these can never happen in a physical change?
A. Change in the size of objects
B. Change in the state of matter
C. Change in the shape of object
D. Change in the composition of matter
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 25
Class 7 – Chapter 6
SAS21S070609
9 Sania later repeats her activity using magnesium powder instead of magnesium ribbon.
Will there be a change in her irst three observations? Explain your answer.
SAS21S070610
10 Which of these can never happen in a physical change?
A. Change in the size of objects
B. Change in the state of matter
C. Change in the shape of object
D. Change in the composition of matter
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 25
Page 26
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 7
Weather, Climate and Adaptations of Animals to Climate
The table shows the weather over four days in a week for a city.
Maximum Minimum Humidity Rainfall
Temperature Temperature
Day 1 33℃ 27℃ 65℃ 2 mm
Day 2 28℃ 22℃ 80℃ 6 mm
Day 3 30℃ 24℃ 70℃ 4 mm
Day 4 33℃ 27℃ 55℃ 2 mm
SAS21S070701
1 Complete the graph to show the amount of rainfall in the four days.
Shade the dotted columns correctly.
Day 1 Day 2 Day 3 Day 4
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 7 – Chapter 7
Weather, Climate and Adaptations of Animals to Climate
The table shows the weather over four days in a week for a city.
Maximum Minimum Humidity Rainfall
Temperature Temperature
Day 1 33℃ 27℃ 65℃ 2 mm
Day 2 28℃ 22℃ 80℃ 6 mm
Day 3 30℃ 24℃ 70℃ 4 mm
Day 4 33℃ 27℃ 55℃ 2 mm
SAS21S070701
1 Complete the graph to show the amount of rainfall in the four days.
Shade the dotted columns correctly.
Day 1 Day 2 Day 3 Day 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 26
Page 27
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 7
SAS21S070702
2 Which day was the most warm and humid?
A. Day 1
B. Day 2
C. Day 3
D. Day 4
SAS21S070703
3 The weather pattern of the four days continued over the next one month.
Which season does the weather indicate?
A. Summer
B. Monsoon
C. Autumn
D. Winter
The picture shows a newspaper cut-out.
The cut-out shows the climate of a city over a month.
Climate of City X
Average daily maximum temperature over the month = 31.2℃
Average daily minimum temperature over the month = 22.6℃
Average monthly rainfall = 168 mm
SAS21S070704
4 Can we say that the city experiences a hot and wet climate throughout the year?
Explain your answer.
SAS21S070705
5 Which of the following places experiences a cold and dry climate for most of the year?
A. Mountain
B. Grassland
C. Desert
D. Sea coast
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 27
Class 7 – Chapter 7
SAS21S070702
2 Which day was the most warm and humid?
A. Day 1
B. Day 2
C. Day 3
D. Day 4
SAS21S070703
3 The weather pattern of the four days continued over the next one month.
Which season does the weather indicate?
A. Summer
B. Monsoon
C. Autumn
D. Winter
The picture shows a newspaper cut-out.
The cut-out shows the climate of a city over a month.
Climate of City X
Average daily maximum temperature over the month = 31.2℃
Average daily minimum temperature over the month = 22.6℃
Average monthly rainfall = 168 mm
SAS21S070704
4 Can we say that the city experiences a hot and wet climate throughout the year?
Explain your answer.
SAS21S070705
5 Which of the following places experiences a cold and dry climate for most of the year?
A. Mountain
B. Grassland
C. Desert
D. Sea coast
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 27
Page 28
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 7
A rainforest is a dense area of tall, evergreen trees and shrubs on the forest loor.
The picture shows the different layers in a rainforest.
SAS21S070706
6 Which of these statements is true about rainforests?
Circle ‘Yes’ or ‘No’ for the correct response.
Is the Statement True about Rainforests? Yes or No
Very little amount of sunlight reaches the rainforest loor. Yes/No
Only shrubs are found in rainforests. Yes/No
Rainforests are found in warm regions of the earth. Yes/No
SAS21S070707
7 Eagles are mostly found in Layer 4 and Layer 5 of rainforests.
How does living at this height help them?
A. They can build large nests
B. They can bask in the sunlight
C. They can ly high up in the sky
D. They can easily locate their prey
SAS21S070708
8 Which of the following features is common to the mammals living in a rainforest?
A. Padded feet
B. Short bushy tail
C. Short body hair
D. Thick layer of fat
SAS21S070709
9 How do large, thin ears help a spotted deer in hot and humid conditions?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 28
Class 7 – Chapter 7
A rainforest is a dense area of tall, evergreen trees and shrubs on the forest loor.
The picture shows the different layers in a rainforest.
SAS21S070706
6 Which of these statements is true about rainforests?
Circle ‘Yes’ or ‘No’ for the correct response.
Is the Statement True about Rainforests? Yes or No
Very little amount of sunlight reaches the rainforest loor. Yes/No
Only shrubs are found in rainforests. Yes/No
Rainforests are found in warm regions of the earth. Yes/No
SAS21S070707
7 Eagles are mostly found in Layer 4 and Layer 5 of rainforests.
How does living at this height help them?
A. They can build large nests
B. They can bask in the sunlight
C. They can ly high up in the sky
D. They can easily locate their prey
SAS21S070708
8 Which of the following features is common to the mammals living in a rainforest?
A. Padded feet
B. Short bushy tail
C. Short body hair
D. Thick layer of fat
SAS21S070709
9 How do large, thin ears help a spotted deer in hot and humid conditions?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 28
Page 29
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 7
SAS21S070710
10 Mountain goats are found in the Himalayas.
Which of the following features helps them to survive the cold conditions?
A. Thick fur
B. Short tail
C. Sharp horns
D. Large hooves
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 29
Class 7 – Chapter 7
SAS21S070710
10 Mountain goats are found in the Himalayas.
Which of the following features helps them to survive the cold conditions?
A. Thick fur
B. Short tail
C. Sharp horns
D. Large hooves
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 29
Page 30
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 8
Winds, Storms and Cyclones
The diagram shows how a radiator heats a room.
The arrows show how the air circulates in the room.
Three layers of air X, Y and Z are shown in the diagram.
SAS21S070801
1 Which of the following statements is correct about the layers of air?
Circle ‘Yes’ or ‘No’ for the correct response.
Is This Statement Correct? Yes or No
Layer X is less dense than Layer Y. Yes/No
Layer Y is denser than Layer Z. Yes/No
Layer Z is the densest layer. Yes/No
SAS21S070802
2 What happens when air expands over the sea due to heating?
A. The air causes high waves in the sea.
B. The air moves from the sea to the land.
C. The air forms high pressure over the sea.
D. The air rises up carrying water vapour with it.
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 7 – Chapter 8
Winds, Storms and Cyclones
The diagram shows how a radiator heats a room.
The arrows show how the air circulates in the room.
Three layers of air X, Y and Z are shown in the diagram.
SAS21S070801
1 Which of the following statements is correct about the layers of air?
Circle ‘Yes’ or ‘No’ for the correct response.
Is This Statement Correct? Yes or No
Layer X is less dense than Layer Y. Yes/No
Layer Y is denser than Layer Z. Yes/No
Layer Z is the densest layer. Yes/No
SAS21S070802
2 What happens when air expands over the sea due to heating?
A. The air causes high waves in the sea.
B. The air moves from the sea to the land.
C. The air forms high pressure over the sea.
D. The air rises up carrying water vapour with it.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 30
Page 31
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 8
SAS21S070803
3 Which of these is the safest action when caught outdoors in a thunderstorm?
A. Lie down on the ground
B. Take shelter under a big tree
C. Squat down and coil yourself
D. Stand in an open ield away from trees
A sealed juice can has a tiny hole on its wall. No juice lows out from the can.
As soon as the can is opened, juice starts lowing out from the hole.
SAS21S070804
4 Why did the juice start lowing out of the can the moment the can was opened?
The picture shows the winds that blow from the land to the ocean.
SAS21S070805
5 In which month of the year are the winds likely to be blowing as shown in the given picture?
A. April
B. June
C. August
D. November
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 31
Class 7 – Chapter 8
SAS21S070803
3 Which of these is the safest action when caught outdoors in a thunderstorm?
A. Lie down on the ground
B. Take shelter under a big tree
C. Squat down and coil yourself
D. Stand in an open ield away from trees
A sealed juice can has a tiny hole on its wall. No juice lows out from the can.
As soon as the can is opened, juice starts lowing out from the hole.
SAS21S070804
4 Why did the juice start lowing out of the can the moment the can was opened?
The picture shows the winds that blow from the land to the ocean.
SAS21S070805
5 In which month of the year are the winds likely to be blowing as shown in the given picture?
A. April
B. June
C. August
D. November
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 31
Page 32
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 8
The table shows the estimated wind speed and pressure at the centre of a cyclone over a few days.
Day Wind speed (km/hr) Pressure at the centre (hPa)
Tuesday 165 975
Wednesday 200 945
Thursday 240 940
Friday 210 950
SAS21S070806
6 On which day is the cyclone likely to be most destructive?
A. Tuesday
B. Wednesday
C. Thursday
D. Friday
SAS21S070807
7 What does the data in the given table show?
A. High speed winds always form a cyclone.
B. High speed winds cause the destruction of life and property.
C. The lower the pressure at the centre, the greater is the wind speed.
D. The greater the wind speed, the higher is the pressure at the centre.
SAS21S070808
8 How is low pressure created in the centre of a cyclone?
SAS21S070809
9 What helps weather experts to monitor the movement of cyclones?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 32
Class 7 – Chapter 8
The table shows the estimated wind speed and pressure at the centre of a cyclone over a few days.
Day Wind speed (km/hr) Pressure at the centre (hPa)
Tuesday 165 975
Wednesday 200 945
Thursday 240 940
Friday 210 950
SAS21S070806
6 On which day is the cyclone likely to be most destructive?
A. Tuesday
B. Wednesday
C. Thursday
D. Friday
SAS21S070807
7 What does the data in the given table show?
A. High speed winds always form a cyclone.
B. High speed winds cause the destruction of life and property.
C. The lower the pressure at the centre, the greater is the wind speed.
D. The greater the wind speed, the higher is the pressure at the centre.
SAS21S070808
8 How is low pressure created in the centre of a cyclone?
SAS21S070809
9 What helps weather experts to monitor the movement of cyclones?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 32
Page 33
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 8
SAS21S070810
10 Which of these instruments is used to measure the wind speed?
A. B.
C. D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 33
Class 7 – Chapter 8
SAS21S070810
10 Which of these instruments is used to measure the wind speed?
A. B.
C. D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 33
Page 34
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 9
Soil
SAS21S070901
1 Sudha collects 10 g of four different soil samples. What should she do to ind out which sample contains
the maximum moisture?
A. Add the soil samples in water and check which one mixes the best.
B. Heat the soil samples for an hour and check which one weighs the least.
C. Put the soil samples on paper sheets and check which one creates the smallest spot.
D. Squeeze the soil samples with ingers and check which one forms the smallest lump.
Pankaj studied the soil in four different locations.
The table shows the number of types of plants and insects he found in the soil at each place.
Soil from Types of plants found Types of insects found
Location 1 2 1
Location 2 3 3
Location 3 1 0
Location 4 2 2
SAS21S070902
2 In which location does the soil have the most number of livings things?
A. Location 1
B. Location 2
C. Location 3
D. Location 4
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 7 – Chapter 9
Soil
SAS21S070901
1 Sudha collects 10 g of four different soil samples. What should she do to ind out which sample contains
the maximum moisture?
A. Add the soil samples in water and check which one mixes the best.
B. Heat the soil samples for an hour and check which one weighs the least.
C. Put the soil samples on paper sheets and check which one creates the smallest spot.
D. Squeeze the soil samples with ingers and check which one forms the smallest lump.
Pankaj studied the soil in four different locations.
The table shows the number of types of plants and insects he found in the soil at each place.
Soil from Types of plants found Types of insects found
Location 1 2 1
Location 2 3 3
Location 3 1 0
Location 4 2 2
SAS21S070902
2 In which location does the soil have the most number of livings things?
A. Location 1
B. Location 2
C. Location 3
D. Location 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 34
Page 35
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 9
SAS21S070903
3 Which graph correctly shows the data in the table?
A.
B.
C.
D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 35
Class 7 – Chapter 9
SAS21S070903
3 Which graph correctly shows the data in the table?
A.
B.
C.
D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 35
Page 36
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 9
The diagram shows how a radiator heats a room.
The arrows show how the air circulates in the room.
Three layers of air X, Y and Z are shown in the diagram.
SAS21S070904
4 On what basis did the layers separate in the jar?
A. Size of the particles
B. Mass of the particles
C. Shape of the particles
D. Volume of the particles
SAS21S070905
5 Which layer contains the dead matter present in soil?
The chart shows the proportion of components in a soil sample
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 36
Class 7 – Chapter 9
The diagram shows how a radiator heats a room.
The arrows show how the air circulates in the room.
Three layers of air X, Y and Z are shown in the diagram.
SAS21S070904
4 On what basis did the layers separate in the jar?
A. Size of the particles
B. Mass of the particles
C. Shape of the particles
D. Volume of the particles
SAS21S070905
5 Which layer contains the dead matter present in soil?
The chart shows the proportion of components in a soil sample
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 36
Page 37
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 9
SAS21S070906
6 Which of these statements can be concluded from the chart? Circle ‘Yes’ or ‘No’ for the correct
response.
Can this statement be concluded? Yes or No
The soil is found in hilly regions. Yes/No
The soil contains large amounts of minerals. Yes/No
The soil contains equal amounts of water and air. Yes/No
SAS21S070907
7 Sand, clay and loam are the three types of soil. Which type of soil is shown in the chart?
Rizwan added 1 kg of four different types of soil in separate pots.
Each pot has a small hole at the bottom.
Rizwan then poured water in each pot.
He noted how much water is collected in the beaker below the pot after an hour.
Pot 1 Pot 2 Pot 3 Pot 4
Amount of water collected after an hour 200 mL 250 mL 300 mL 150 mL
SAS21S070908
8 Which pot contains soil that best retains water?
A. Pot 1
B. Pot 2
C. Pot 3
D. Pot 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 37
Class 7 – Chapter 9
SAS21S070906
6 Which of these statements can be concluded from the chart? Circle ‘Yes’ or ‘No’ for the correct
response.
Can this statement be concluded? Yes or No
The soil is found in hilly regions. Yes/No
The soil contains large amounts of minerals. Yes/No
The soil contains equal amounts of water and air. Yes/No
SAS21S070907
7 Sand, clay and loam are the three types of soil. Which type of soil is shown in the chart?
Rizwan added 1 kg of four different types of soil in separate pots.
Each pot has a small hole at the bottom.
Rizwan then poured water in each pot.
He noted how much water is collected in the beaker below the pot after an hour.
Pot 1 Pot 2 Pot 3 Pot 4
Amount of water collected after an hour 200 mL 250 mL 300 mL 150 mL
SAS21S070908
8 Which pot contains soil that best retains water?
A. Pot 1
B. Pot 2
C. Pot 3
D. Pot 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 37
Page 38
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 9
SAS21S070909
9 Rizwan put equal amounts of soil in each pot. Which other thing must Rizwan keep the same in his
activity?
A lump of soil is dropped in a glass of water.
Some tiny bubbles appear on the surface of the soil.
SAS21S070910
10 What does the activity prove?
A. Soil contains air
B. Soil contains water
C. Soil contains minerals
D. Soil contains dead matter
Class 7 – Chapter 9
SAS21S070909
9 Rizwan put equal amounts of soil in each pot. Which other thing must Rizwan keep the same in his
activity?
A lump of soil is dropped in a glass of water.
Some tiny bubbles appear on the surface of the soil.
SAS21S070910
10 What does the activity prove?
A. Soil contains air
B. Soil contains water
C. Soil contains minerals
D. Soil contains dead matter
Page 39
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 10
Respiration in Organisms
Pankaj studied the soil in four different locations.
The table shows the number of types of plants and insects he found in the soil at each place.
Breathing rate (times per minute)
Sleeping 15
Cycling 30
Jogging 45
Reading 20
SAS21S071001
1 Complete the graph below to show the data in the table.
Shade the columns in the graph correctly.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 39
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 10
Respiration in Organisms
Pankaj studied the soil in four different locations.
The table shows the number of types of plants and insects he found in the soil at each place.
Breathing rate (times per minute)
Sleeping 15
Cycling 30
Jogging 45
Reading 20
SAS21S071001
1 Complete the graph below to show the data in the table.
Shade the columns in the graph correctly.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 39
Page 40
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 10
SAS21S071002
2 For which activity does the girl require maximum energy?
A. Sleeping
B. Cycling
C. Jogging
D. Reading
SAS21S071003
3 Joggers often develop cramps in calf muscles. Which of these chemicals, when produced, causes
muscle cramps?
A. Glucose
B. Alcohol
C. Lactic acid
D. Carbon dioxide
The reactions below show two types of respiration.
with
oxygen
. glucose carbon dioxide + water + energy
without
oxygen
ii. glucose carbon dioxide + alcohol + energy
SAS21S071004
4 Name the types of respiration shown in reaction (i) and (ii).
SAS21S071005
5 What causes the reactions to be different?
A. Release of energy
B. Production of a gas
C. Breakdown of glucose
D. Presence or absence of oxygen
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 40
Class 7 – Chapter 10
SAS21S071002
2 For which activity does the girl require maximum energy?
A. Sleeping
B. Cycling
C. Jogging
D. Reading
SAS21S071003
3 Joggers often develop cramps in calf muscles. Which of these chemicals, when produced, causes
muscle cramps?
A. Glucose
B. Alcohol
C. Lactic acid
D. Carbon dioxide
The reactions below show two types of respiration.
with
oxygen
. glucose carbon dioxide + water + energy
without
oxygen
ii. glucose carbon dioxide + alcohol + energy
SAS21S071004
4 Name the types of respiration shown in reaction (i) and (ii).
SAS21S071005
5 What causes the reactions to be different?
A. Release of energy
B. Production of a gas
C. Breakdown of glucose
D. Presence or absence of oxygen
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 40
Page 41
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 10
SAS21S071006
6 Which of these animals breathes through its skin?
A. Fish
B. Bird
C. Snake
D. Earthworm
Pankaj studied the soil in four different locations.
The table shows the number of types of plants and insects he found in the soil at each place.
Chest measurement
Student 1 Student 2 Student 3 Student 4
Inhalation 62 cm 58 cm 60 cm 65 cm
Exhalation 45 54 cm 55 cm 56 cm
SAS21S071007
7 Chest expansion is the difference in chest sizes during inhalation and exhalation. Which student’s
chest expanded the most?
A. Student 1
B. Student 2
C. Student 3
D. Student 4
SAS21S071008
8 What should be done to con irm the chest measurements of the four students?
A. Repeat the chest measurements with four new students.
B. Repeat each student’s chest measurement for inhalation only.
C. Repeat the chest measurements using a different measuring tape.
D. Repeat each student’s chest measurement for both inhalation and exhalation.
SAS21S071009
9 Which of these statements is correct for the respiratory system?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this statement correct? Yes or No
The ribs move in during exhalation. Yes/No
The lungs constrict during inhalation. Yes/No
The diaphragm expands during exhalation. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 41
Class 7 – Chapter 10
SAS21S071006
6 Which of these animals breathes through its skin?
A. Fish
B. Bird
C. Snake
D. Earthworm
Pankaj studied the soil in four different locations.
The table shows the number of types of plants and insects he found in the soil at each place.
Chest measurement
Student 1 Student 2 Student 3 Student 4
Inhalation 62 cm 58 cm 60 cm 65 cm
Exhalation 45 54 cm 55 cm 56 cm
SAS21S071007
7 Chest expansion is the difference in chest sizes during inhalation and exhalation. Which student’s
chest expanded the most?
A. Student 1
B. Student 2
C. Student 3
D. Student 4
SAS21S071008
8 What should be done to con irm the chest measurements of the four students?
A. Repeat the chest measurements with four new students.
B. Repeat each student’s chest measurement for inhalation only.
C. Repeat the chest measurements using a different measuring tape.
D. Repeat each student’s chest measurement for both inhalation and exhalation.
SAS21S071009
9 Which of these statements is correct for the respiratory system?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this statement correct? Yes or No
The ribs move in during exhalation. Yes/No
The lungs constrict during inhalation. Yes/No
The diaphragm expands during exhalation. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 41
Page 42
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 10
Carbon dioxide reacts with lime water and turns it milky.
Asha pumps natural air into the lime water in Beaker 1.
She blows air from her mouth into the lime water in Beaker 2.
SAS21S071010
10 In which beaker will the limewater turn milky irst? Explain your answer.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 42
Class 7 – Chapter 10
Carbon dioxide reacts with lime water and turns it milky.
Asha pumps natural air into the lime water in Beaker 1.
She blows air from her mouth into the lime water in Beaker 2.
SAS21S071010
10 In which beaker will the limewater turn milky irst? Explain your answer.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 42
Page 43
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 11
Transportation in Animals and Plants
Geeta measured the pulse rate of four students.
The table below shows her indings.
Pulse rate of the student (beats per minute)
1st Reading 2nd Reading 3rd Reading
Student 1 74 73 74
Student 2 80 78 79
Student 3 72 72 78
Student 4 72 71 72
SAS21S071101
1 Which student has the highest pulse rate?
A. Student 1
B. Student 2
C. Student 3
D. Student 4
SAS21S071102
2 Why did Geeta measure the pulse rate of each student thrice?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 43
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 11
Transportation in Animals and Plants
Geeta measured the pulse rate of four students.
The table below shows her indings.
Pulse rate of the student (beats per minute)
1st Reading 2nd Reading 3rd Reading
Student 1 74 73 74
Student 2 80 78 79
Student 3 72 72 78
Student 4 72 71 72
SAS21S071101
1 Which student has the highest pulse rate?
A. Student 1
B. Student 2
C. Student 3
D. Student 4
SAS21S071102
2 Why did Geeta measure the pulse rate of each student thrice?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 43
Page 44
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 11
SAS21S071103
3 Geeta made an error in one of the readings. Which one is it most likely to be?
A. Student 1 reading 3
B. Student 2 reading 1
C. Student 3 reading 3
D. Student 4 reading 2
The picture shows the directions of movement of two different substances in plants.
SAS21S071104
4 What do the two types of arrows in the picture show?
A. Movement of air Movement of water
B. Movement of food Movement of air
C. Movement of water Movement of food
D. Movement of air Movement of minerals
SAS21S071105
5 Name the process that helps plants to regulate their temperature.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 44
Class 7 – Chapter 11
SAS21S071103
3 Geeta made an error in one of the readings. Which one is it most likely to be?
A. Student 1 reading 3
B. Student 2 reading 1
C. Student 3 reading 3
D. Student 4 reading 2
The picture shows the directions of movement of two different substances in plants.
SAS21S071104
4 What do the two types of arrows in the picture show?
A. Movement of air Movement of water
B. Movement of food Movement of air
C. Movement of water Movement of food
D. Movement of air Movement of minerals
SAS21S071105
5 Name the process that helps plants to regulate their temperature.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 44
Page 45
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 11
The picture shows the directions of movement of two different substances in plants.
SAS21S071106
6 Which colour shade indicates that the body is well hydrated?
A. Shade 1
B. Shade 4
C. Shade 6
D. Shade 8
SAS21S071107
7 Under normal conditions, human urine contains 95% water and 5% waste products.
What would be the percentage of waste products in a darker shade of urine?
A. 0%
B. Less than 5%
C. 5%
D. More than 5%
SAS21S071108
8 Which of these statements is correct?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this statement correct? Yes or No
All arteries carry oxygen-rich blood. Yes/No
All veins are thin walled. Yes/No
Capillaries originate from veins. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 45
Class 7 – Chapter 11
The picture shows the directions of movement of two different substances in plants.
SAS21S071106
6 Which colour shade indicates that the body is well hydrated?
A. Shade 1
B. Shade 4
C. Shade 6
D. Shade 8
SAS21S071107
7 Under normal conditions, human urine contains 95% water and 5% waste products.
What would be the percentage of waste products in a darker shade of urine?
A. 0%
B. Less than 5%
C. 5%
D. More than 5%
SAS21S071108
8 Which of these statements is correct?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this statement correct? Yes or No
All arteries carry oxygen-rich blood. Yes/No
All veins are thin walled. Yes/No
Capillaries originate from veins. Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 45
Page 46
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 11
The table shows the heart rate of a student before and after different types of exercise.
Number of heart beats per minute
Before exercise Just after exercise
Exercise 1 92 135
Exercise 2 88 105
Exercise 3 90 155
Exercise 4 92 115
SAS21S071109
9 Which exercise resulted in the maximum change in heart rate?
A. Exercise 1
B. Exercise 2
C. Exercise 3
D. Exercise 4
SAS21S071110
10 The normal heart rate for an adult human is 60-100 beats per minute. Why does the heart rate vary
among individuals?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 46
Class 7 – Chapter 11
The table shows the heart rate of a student before and after different types of exercise.
Number of heart beats per minute
Before exercise Just after exercise
Exercise 1 92 135
Exercise 2 88 105
Exercise 3 90 155
Exercise 4 92 115
SAS21S071109
9 Which exercise resulted in the maximum change in heart rate?
A. Exercise 1
B. Exercise 2
C. Exercise 3
D. Exercise 4
SAS21S071110
10 The normal heart rate for an adult human is 60-100 beats per minute. Why does the heart rate vary
among individuals?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 46
Page 47
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 12
Reproduction in Plants
The picture shows parts of a lower.
P, Q, R and S are the four labelled parts.
SAS21S071201
1 Removal of which part of the lower will not stop reproduction in the plant?
A. P
B. Q
C. R
D. S
SAS21S071202
2 Why is part P brightly coloured in most lowers?
A. To repel animals
B. To attract insects
C. To help the plant make food
D. To help the plant retain water
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 47
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 12
Reproduction in Plants
The picture shows parts of a lower.
P, Q, R and S are the four labelled parts.
SAS21S071201
1 Removal of which part of the lower will not stop reproduction in the plant?
A. P
B. Q
C. R
D. S
SAS21S071202
2 Why is part P brightly coloured in most lowers?
A. To repel animals
B. To attract insects
C. To help the plant make food
D. To help the plant retain water
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 47
Page 48
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 12
The picture shows parts of a lower.
P, Q, R and S are the four labelled parts.
Type of seed Picture Features
Seed 1 very light weight,
has feathery hairs
Seed 2 hard, has tiny
hooks
Seed 3 hard, has spikes
Seed 4 light weight, hard
and hollow
SAS21S071203
3 Which seed is most likely to be dispersed by water?
A. Seed 1
B. Seed 2
C. Seed 3
D. Seed 4
The picture shows the scattering of seeds when a fruit bursts.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 48
Class 7 – Chapter 12
The picture shows parts of a lower.
P, Q, R and S are the four labelled parts.
Type of seed Picture Features
Seed 1 very light weight,
has feathery hairs
Seed 2 hard, has tiny
hooks
Seed 3 hard, has spikes
Seed 4 light weight, hard
and hollow
SAS21S071203
3 Which seed is most likely to be dispersed by water?
A. Seed 1
B. Seed 2
C. Seed 3
D. Seed 4
The picture shows the scattering of seeds when a fruit bursts.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 48
Page 49
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 12
SAS21S071204
4 How does the bursting of fruit help in the germination of seeds?
Shekhar cut the stem of a hornwort plant into two pieces.
He placed both the pieces under water.
After a week, Shekhar found both the pieces growing as new plants.
SAS21S071205
5 What can be concluded from the activity?
A. Hornworts can survive only under water.
B. Hornworts can absorb nutrients through leafs.
C. Hornworts bear spores that help it to reproduce.
D. Hornworts can reproduce by vegetative propagation.
SAS21S071206
6 How can Shekhar con irm the result of his activity?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 49
Class 7 – Chapter 12
SAS21S071204
4 How does the bursting of fruit help in the germination of seeds?
Shekhar cut the stem of a hornwort plant into two pieces.
He placed both the pieces under water.
After a week, Shekhar found both the pieces growing as new plants.
SAS21S071205
5 What can be concluded from the activity?
A. Hornworts can survive only under water.
B. Hornworts can absorb nutrients through leafs.
C. Hornworts bear spores that help it to reproduce.
D. Hornworts can reproduce by vegetative propagation.
SAS21S071206
6 How can Shekhar con irm the result of his activity?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 49
Page 50
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 12
SAS21S071207
7 Which of these statements is true about the two new hornworts?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this statement correct? Yes or No
They are exact copies of each other. Yes/No
They will grow differently than the original plant. Yes/No
They will have a different life span than the original plant. Yes/No
SAS21S071208
8 Which question will help answer if a plant reproduces sexually?
A. Does the plant bear seeds in its fruit?
B. Does the plant have buds on its leaf?
C. Does the plant bear nodules on its root?
D. Does the plant have nodes on its stem?
SAS21S071209
9 In which part of a lower are pollens deposited?
A. Style
B. Ovary
C. Anther
D. Stigma
SAS21S071210
10 Name three vegetative parts of a plant.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 50
Class 7 – Chapter 12
SAS21S071207
7 Which of these statements is true about the two new hornworts?
Circle ‘Yes’ or ‘No’ for the correct response.
Is this statement correct? Yes or No
They are exact copies of each other. Yes/No
They will grow differently than the original plant. Yes/No
They will have a different life span than the original plant. Yes/No
SAS21S071208
8 Which question will help answer if a plant reproduces sexually?
A. Does the plant bear seeds in its fruit?
B. Does the plant have buds on its leaf?
C. Does the plant bear nodules on its root?
D. Does the plant have nodes on its stem?
SAS21S071209
9 In which part of a lower are pollens deposited?
A. Style
B. Ovary
C. Anther
D. Stigma
SAS21S071210
10 Name three vegetative parts of a plant.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 50
Page 51
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 13
Motion and Time
The table shows the distance travelled by a car in half an hour.
0 – 10 mins 10 – 20 mins 20 – 30 mins
Distance travelled by the car 62 cm 58 cm 60 cm
SAS21S071301
1 Draw a line in the distance-time graph to show how the car travelled.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 51
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 13
Motion and Time
The table shows the distance travelled by a car in half an hour.
0 – 10 mins 10 – 20 mins 20 – 30 mins
Distance travelled by the car 62 cm 58 cm 60 cm
SAS21S071301
1 Draw a line in the distance-time graph to show how the car travelled.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 51
Page 52
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 13
SAS21S071302
2 What can be concluded about the car from the table?
A. It stopped moving after 30 minutes.
B. It had a uniform motion throughout the journey.
C. It travelled with increasing speed throughout the journey.
D. It travelled at the highest speed between 10 and 20 minutes.
SAS21S071303
3 What was the average speed of the car during its journey?
A. 3 km/h
B. 5 km/h
C. 10 km/h
D. 20 km/h
The timetable of a train is shown below.
Station Arrival Departure
New Delhi 06.45 AM
Meerut 08.03 AM 08.05 AM
Muzaffarnagar 08.45 AM 08.47 AM
Saharanpur 09.50 AM 09.55 AM
Roorkee 10.30 AM
SAS21S071304
4 What is the total travel time of the train?
A. 3 hours 30 minutes
B. 3 hours 45 minutes
C. 4 hours 15 minutes
D. 4 hours 45 minutes
SAS21S071305
5 The distance between Meerut and Muzaffarnagar is about 60 km. Calculate the average speed of the
train (km/h) while travelling between the two stations.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 52
Class 7 – Chapter 13
SAS21S071302
2 What can be concluded about the car from the table?
A. It stopped moving after 30 minutes.
B. It had a uniform motion throughout the journey.
C. It travelled with increasing speed throughout the journey.
D. It travelled at the highest speed between 10 and 20 minutes.
SAS21S071303
3 What was the average speed of the car during its journey?
A. 3 km/h
B. 5 km/h
C. 10 km/h
D. 20 km/h
The timetable of a train is shown below.
Station Arrival Departure
New Delhi 06.45 AM
Meerut 08.03 AM 08.05 AM
Muzaffarnagar 08.45 AM 08.47 AM
Saharanpur 09.50 AM 09.55 AM
Roorkee 10.30 AM
SAS21S071304
4 What is the total travel time of the train?
A. 3 hours 30 minutes
B. 3 hours 45 minutes
C. 4 hours 15 minutes
D. 4 hours 45 minutes
SAS21S071305
5 The distance between Meerut and Muzaffarnagar is about 60 km. Calculate the average speed of the
train (km/h) while travelling between the two stations.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 52
Page 53
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 13
SAS21S071306
6 The maximum speed of a car is 180 km/h. What is the maximum speed in m/s?
A. 20 m/s
B. 30 m/s
C. 50 m/s
D. 60 m/s
SAS21S071307
7 Which of these actions is an example of circular motion?
A. A child riding a see-saw
B. A child pumping air in a tyre
C. A player bowling a cricket ball
D. A player serving a tennis ball with racket
Three students start running from the starting point at the same time.
The picture shows the position of the students on the path after a minute.
SAS21S071308
8 Which student ran the fastest? Explain your answer.
The diagram shows a pendulum in periodic motion.
The time period of a pendulum is the time taken by the bob to make one complete oscillation.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 53
Class 7 – Chapter 13
SAS21S071306
6 The maximum speed of a car is 180 km/h. What is the maximum speed in m/s?
A. 20 m/s
B. 30 m/s
C. 50 m/s
D. 60 m/s
SAS21S071307
7 Which of these actions is an example of circular motion?
A. A child riding a see-saw
B. A child pumping air in a tyre
C. A player bowling a cricket ball
D. A player serving a tennis ball with racket
Three students start running from the starting point at the same time.
The picture shows the position of the students on the path after a minute.
SAS21S071308
8 Which student ran the fastest? Explain your answer.
The diagram shows a pendulum in periodic motion.
The time period of a pendulum is the time taken by the bob to make one complete oscillation.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 53
Page 54
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 13
SAS21S071309
9 What would be the movement of the bob for one complete oscillation of the pendulum?
A. C to B
B. C to A
C. B to C to A
D. B to C to B
The table shows the distance travelled by a car in half an hour.
Pendulum 1 Pendulum 2 Pendulum 3 Pendulum 4
Time taken for 30 oscillations 48 s 54 s 45 s 52 s
SAS21S071310
10 Which pendulum has the shortest time period?
A. Pendulum 1
B. Pendulum 2
C. Pendulum 3
D. Pendulum 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 54
Class 7 – Chapter 13
SAS21S071309
9 What would be the movement of the bob for one complete oscillation of the pendulum?
A. C to B
B. C to A
C. B to C to A
D. B to C to B
The table shows the distance travelled by a car in half an hour.
Pendulum 1 Pendulum 2 Pendulum 3 Pendulum 4
Time taken for 30 oscillations 48 s 54 s 45 s 52 s
SAS21S071310
10 Which pendulum has the shortest time period?
A. Pendulum 1
B. Pendulum 2
C. Pendulum 3
D. Pendulum 4
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 54
Page 55
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 14
Electric Current and its Effects
The symbols for different components of an electric circuit are shown below.
SAS21S071401
1 Draw an electric circuit with symbols that has the following conditions.
Ÿ Battery contains three electric cells.
Ÿ Switch is turned OFF.
Ÿ Two electric bulbs are in series.
SAS21S071402
2 Which of these is the correct arrangement of electric cells in a battery?
A. B.
C. D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 55
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 14
Electric Current and its Effects
The symbols for different components of an electric circuit are shown below.
SAS21S071401
1 Draw an electric circuit with symbols that has the following conditions.
Ÿ Battery contains three electric cells.
Ÿ Switch is turned OFF.
Ÿ Two electric bulbs are in series.
SAS21S071402
2 Which of these is the correct arrangement of electric cells in a battery?
A. B.
C. D.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 55
Page 56
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 14
SAS21S071403
3 Which of these devices work due to the heating effect of electric current?
A. Electric fan
B. Electric bell
C. Electric kettle
D. Electric torch
An electric fuse consists of a metal wire.
The wire breaks the electric circuit when the electricity load is too high.
SAS21S071404
4 What makes the wire break when the electricity load is too high?
A. It is made of metal.
B. It has a low melting point.
C. It is a good conductor of heat.
D. It is a good conductor of electricity.
SAS21S071405
5 Why does the ilament of a bulb glow when connected to an electric circuit?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 56
Class 7 – Chapter 14
SAS21S071403
3 Which of these devices work due to the heating effect of electric current?
A. Electric fan
B. Electric bell
C. Electric kettle
D. Electric torch
An electric fuse consists of a metal wire.
The wire breaks the electric circuit when the electricity load is too high.
SAS21S071404
4 What makes the wire break when the electricity load is too high?
A. It is made of metal.
B. It has a low melting point.
C. It is a good conductor of heat.
D. It is a good conductor of electricity.
SAS21S071405
5 Why does the ilament of a bulb glow when connected to an electric circuit?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 56
Page 57
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 14
SAS21S071406
6 Which of these can cause a ire in an electric circuit?
Circle ‘Yes’ or ‘No’ for the correct response.
Can this cause a ire in an electric circuit? Yes or No
Use of multiple electric fuses Yes/No
Flow of a very high electric current Yes/No
Direct touching of two uncovered wires Yes/No
SAS21S071407
7 Which of these labels on an electric device con irms standard quality?
A. B.
C. D.
SAS21S071408
8 Which of these consumes the least electricity for producing the same amount of light?
A. CFL
B. LED
C. Filament bulb
D. Fluorescent tube
The picture shows steel clips being attracted to an iron nail in an electric circuit.
battery
iron nail
steel clips
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 57
Class 7 – Chapter 14
SAS21S071406
6 Which of these can cause a ire in an electric circuit?
Circle ‘Yes’ or ‘No’ for the correct response.
Can this cause a ire in an electric circuit? Yes or No
Use of multiple electric fuses Yes/No
Flow of a very high electric current Yes/No
Direct touching of two uncovered wires Yes/No
SAS21S071407
7 Which of these labels on an electric device con irms standard quality?
A. B.
C. D.
SAS21S071408
8 Which of these consumes the least electricity for producing the same amount of light?
A. CFL
B. LED
C. Filament bulb
D. Fluorescent tube
The picture shows steel clips being attracted to an iron nail in an electric circuit.
battery
iron nail
steel clips
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 57
Page 58
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 14
SAS21S071409
9 Which effect of electric current attracts the steel clips to the iron nail?
SAS21S071410
10 In which of these devices is an electromagnet used?
Circle ‘Yes’ or ‘No’ for the correct response.
Is an electromagnet used in this device? Yes or No
Electric fan Yes/No
Electric bell Yes/No
Electric heater Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 58
Class 7 – Chapter 14
SAS21S071409
9 Which effect of electric current attracts the steel clips to the iron nail?
SAS21S071410
10 In which of these devices is an electromagnet used?
Circle ‘Yes’ or ‘No’ for the correct response.
Is an electromagnet used in this device? Yes or No
Electric fan Yes/No
Electric bell Yes/No
Electric heater Yes/No
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 58
Page 59
क ीय मा यिमक िश ा बोड
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 15
Light
SAS21S071501
1 Which letter’s image on a plane mirror will not be inverted sideways?
A. L
B. P
C. M
D. B
The picture shows a glass bowl.
SAS21S071502
2 What should be done to make the glass bowl act as a mirror?
A. Fill the bowl completely with water
B. Break the bowl into smaller pieces
C. Wrap the bowl fully with a plastic sheet
D. Cover the bowl’s outer side with aluminium foil
SAS21S071503
3 Microscopes are used to view microorganisms.
What type of lens is used in a microscope?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 59
CENTRAL BOARD OF SECONDARY EDUCATION
Curriculum Aligned Competency Based Test Items
Science
Class 7 – Chapter 15
Light
SAS21S071501
1 Which letter’s image on a plane mirror will not be inverted sideways?
A. L
B. P
C. M
D. B
The picture shows a glass bowl.
SAS21S071502
2 What should be done to make the glass bowl act as a mirror?
A. Fill the bowl completely with water
B. Break the bowl into smaller pieces
C. Wrap the bowl fully with a plastic sheet
D. Cover the bowl’s outer side with aluminium foil
SAS21S071503
3 Microscopes are used to view microorganisms.
What type of lens is used in a microscope?
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 59
Page 60
Curriculum Aligned Competency Based Test Items Science
Class 7 – Chapter 15
Seema dropped a water droplet on a newspaper.
She found that the letters are appearing larger through the droplet.
SAS21S071504
4 Why are the letters appearing larger through the droplet?
SAS21S071505
5 Which of these is true about the image formed by a concave lens?
Is this true about the image formed? Yes or No
It is real. Yes/No
It is erect. Yes/No
It is larger than the object. Yes/No
Ayesha keeps a toy in front of a plane mirror.
She then looks at the mirror to see the image of the toy.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 60
Class 7 – Chapter 15
Seema dropped a water droplet on a newspaper.
She found that the letters are appearing larger through the droplet.
SAS21S071504
4 Why are the letters appearing larger through the droplet?
SAS21S071505
5 Which of these is true about the image formed by a concave lens?
Is this true about the image formed? Yes or No
It is real. Yes/No
It is erect. Yes/No
It is larger than the object. Yes/No
Ayesha keeps a toy in front of a plane mirror.
She then looks at the mirror to see the image of the toy.
Copyright (c) 2021 CBSE and Sri Aurobindo Society All Rights Reserved Page 60
Document Details
| Board / Org | Aglasem |
| Exam | Class 7 |
| Type | Question Bank |
| Pages | 74 |
| Updated | 24 Sep 2026 |