Class 9 PT II Question Paper 2025-26 Science

CBSE CLASS 9
PT II Question Paper
Session 2025-26

SCIENCE

Exam CBSE Class 9
Subject Science
Session 2025-26
Document Type PT II Question Paper

Notes · Sample Papers · Previous Year Papers · Mock Tests

m
om .co

c m
m. as e
se l
Question Paper
SECOND UNIT TEST
SESSION: 2025 – 2026 ag
Class: IX Maximum Marks: 40
Subject: Science Time: 1 hour 30 Minutes
General Instructions:
���� This question paper consists of 19 questions in 3 sections and 04 pages. Section A is
Biology, Section B is Chemistry and Section C is Physics.

m
����� All questions are compulsory. However, an internal choice is provided in some questions. A

m .co
student is expected to attempt only one of these questions.

.co m
Section – A (BIOLOGY)

s e
em
1. Match the hybridization type in Column I with the plants involved in the cross in Column 1
II:
s g l a
l a
Column I (Hybridization type) Column II (Cross Between)
a
ag
(a) Intervarietal (i) Plants of two different genera
(b) Interspecific (ii) Plants of two different species of the same
genus
(c) Intergeneric iii) Plants of two different varieties of the same
species
(d) Genetically modified Crop (iv) Introduction of a gene of desired character
Choose the correct option out of the choice given below the question.
(A) a – ii, b – iii, c – i, d – iv (B) a – iii, b – i, c – ii, d – iv

om
(C) a – i, b – ii, c – iii, d – iv (D) a – iii, b – ii, c – i, d – iv

. c
2. Which of the following is a micronutrient required by plants in very small quantities? 1

m
(A) Phosphorus (B) Iron (Fe) (C) Nitrogen (D) Potassium
3. Weeds create problem because they:
s e 1

l a
ag
(A) increase the availability of nutrients for crops.
(B) are beneficial to the soil.
(C) compete with crops for resources like light and nutrients.
(D) are harmless to the plants
4. In the following question, a statement of Assertion (A) is given followed by a 1
corresponding statement of Reason (R). Choose the correct option out of the following
choices.
(A) Both A and R are true and R is the correct explanation of A.
(B) Both A and R are true but R is NOT the correct explanation of A.

m
(C) A is true but R is false.

.co
(D) A is false but R is true.

m
.co m
Assertion (A): Dwarfness is a desirable agronomic characteristic in cereal crops like wheat

s e
and rice.

e m la
s
Reason (R): Dwarf varieties require very little sunlight during their entire growth period.

la
5. If a farmer decides to practice Inter-cropping instead of Mixed cropping, what two
ag 2

ag
precautions must be taken regarding crop selection and planting pattern?
6. (a) Observe Figure A and mention the type of 3
crop pattern depicted.
(b) Mention any two advantages of this crop
pattern.
(c) List any two differences between mixed
cropping and the cropping pattern given.

om m .
Figure A

. c OR
s e
e m
(a) Mention any two desirable agronomic characters for crop improvement.
l a
l as ag
g

a
�
For more Question Papers, Sample Papers, Notes & Syllabus visit Page 1 of 4

(b) Drip and sprinkler systems of irrigation are better than traditional methods of
irrigation. Give an appropriate reason.
(c) Stored food grains often suffer losses due to both biotic and abiotic factors. Give one
example of each type of factor causing loss.
7. a) Differentiate between fertilisers and manures. (Any 2 points) 5
b) If there is low rainfall in a village throughout the year, what measures will you suggest
to the farmers for better cropping?
OR
Write the modes by which insects affect the crop yield. (Any two).
c) In agricultural practices, higher input gives higher yield. Discuss how?
OR
Why is excess use of fertilisers detrimental for the environment?
OR
The figure shows two crop fields (plots A
and B) have been treated by manures and
chemical fertilizers, respectively, keeping
other environment factors same. Observe
the graph and answer the following
question:
(i) Why does plot B shows sudden increase
and then gradual decrease in yield?
(ii) Why is the highest peak in plot A graph
slightly delayed?
(iii) What is the reason for the different
pattern of the two graphs?
Section –B (CHEMISTRY)
8. Two ions, Fe3+ and S2-, combine to form a compound. What should be the formula of the 1
compound?
(A) Fe2S3 (B) FeS (C) FeS2 (D) Fe3S2
9. A science teacher mixed two elements — one metal and one non-metal. She explained that 1
the compound formed contains charged species called ions.
The metal atom loses electrons and the non-metal atom gains electrons. The resulting ions
attract each other to form a stable compound. Based on this, which of the following
statements is most accurate?
(A) Metals gain electrons and non-metals loose electrons equally to form a compound.
(B) The metal atom becomes a cation and the non-metal atom becomes an anion to form a
compound.
(C) The metal atom and non-metal atom combine without forming any ions.
(D) The compound formed is unstable.
10. For Q. No. 10 choose the correct option from the following: 1
(A) Both A and R are true and R is the correct explanation of A.
(B) Both A and R are true and R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
Assertion (A): Atomic mass of aluminium is 27u.
Reason (R): An atom of aluminium is 27 times heavier than 1/12th of the mass of one atom
of carbon -12.
11. In an experiment, a student decomposed certain amount of water and obtained 2 g of 2
hydrogen and 16 g of oxygen.
Another student performed the same experiment and obtained 4 g of hydrogen and 32 g of
oxygen.
(a) Do both students’ results follow the same law of chemical combination? Identify the
law.
(b) Justify your answer with reason.
12. (a) Calculate the formula unit mass of CuSO4.5H2O [Cu=63.5 u, S=32u, O=16u, H=1u]. 3
�
For more Question Papers, Sample Papers, Notes & Syllabus visit Page 2 of 4

m
om .co

c m
m. as e
se l
(b) Calculate the number of atom present in K2Cr2O7 and identify the type of atomicity.

ag
(c) Give one example each of
(i) Bivalent cation
(ii) Monovalent anion
13. (a)The image shows a chemical reaction of Calcium with Zinc carbonate. 5

m
m .co
.co e m
Answer the following questions based on above reactions.

em as
(i) Calculate the amount of zinc present in zinc carbonate.

s g l
(ii) Identify and define the law of chemical combination which is involved in the above

l a a
ag
experiment.
(b) Hydrogen and Oxygen combine in the ratio of 1:8 by mass to form water. Calculate the
mass of oxygen gas that would be required to react completely with 3 g of hydrogen gas to
form water.
(c) Write the chemical formulae for the following by Criss-Cross Method.
(i) Calcium Phosphate (b) Magnesium Hydroxide
OR
(a) Find out the mass percentage of different elements present in Calcium Carbonate
[Given: the atomic mass of Calcium, Carbon and Oxygen are 40u, 12u and 16u

m
respectively]

.co
(b) What is the difference between Cl2 and 2Cl? (Write any two points)
Section – C (PHYSICS)

s em
14. An object of mass 'm' is moving with a velocity 'v'. If the velocity of the object is doubled, 1

la
what happens to its kinetic energy?
(A) It remains the same.
(C) It becomes four times. ag (B) It doubles.
(D) It becomes half.
15. Choose the incorrect unit of energy from the following options: 1
(A) N·m (B) kg·m/s²
(C) kg·m²/s² (D) J
16. A block is moved from point A to point B, either 1
along a straight vertical path or along a zigzag path
(path 2), both resulting in a final height above A.
Which statement is correct?
m
.co
(A) The change in gravitational potential energy is

m
.co m
zero, since the starting and ending points are at

s e
different heights.

e m la
s
(B) The work done by gravity depends on the path

la ag
taken but the change in potential energy remains

ag
the same.
(C) The work done by gravity for the zigzag path is greater because the distance travelled
is longer.
(D) The work done by gravity is the same for both paths and equals the change in
gravitational potential energy.
17. (a) A body of mass m is initially moving with velocity u. A constant force F acts on the 3
body, causing it to move a distance s and reach a final velocity v. Derive the relation
between the work done by the constant force and the change in kinetic energy of the body.
(b) A car of mass 800 kg is moving with an initial velocity of 10 m/s on a straight road.

m .
.co
Engine provides constant force on the car, causing it to accelerate until its velocity

e m
s
increases to 20 m/s

em l a
Calculate the work done by engine.

las ag
g

a
�
For more Question Papers, Sample Papers, Notes & Syllabus visit Page 3 of 4

18. (a) A person stands with a load of 5 kg on his head for 20 minutes and gets tired. Has he 3
done some work or not? Justify your answer.
Refer to the adjacent diagram.
(b) Compare the energies possessed by the
virtue of positions for the two bodies
shown in the figure.
(c) Two children X and Y weigh the same and
start climbing up a rope separately up to a
height 10m. If X takes 10 s while Y takes 20 s
to accomplish the task, who has more power
and why?
19. The following diagram shows that a simple pendulum consists a bob of mass 200 g. 4
Initially the bob of pendulum is at rest at O. It is displaced to one side at A. The height of A
above O is 5 cm. (Take g = 10 ms-2)

(a) Calculate the value of potential energy of bob at position A.
(b) Find the value of total mechanical energy of bob at position A.
(c) What is the value of kinetic energy of bob at mean position O? Is it violating the
conservation of energy at position O? Give reason.
OR
(c) What is the value of kinetic energy and potential energy of bob at position P whose
height above O is 2 cm?

*****

�
For more Question Papers, Sample Papers, Notes & Syllabus visit Page 4 of 4