Class 6 Half Yearly Question Paper 2025-26 Science

CBSE CLASS 6
Half Yearly Question Paper
Session 2025-26

SCIENCE

Exam CBSE Class 6
Subject Science
Session 2025-26
Document Type Half Yearly Question Paper

Notes · Sample Papers · Previous Year Papers · Mock Tests

m
om .co

c m
m. as e
se l
Question Paper
Half Yearly Examination
SESSION: 2025-2026 ag
CLASS: VI MAXIMUM MARKS: 80
SUBJECT: SCIENCE TIME: 3 Hours
General Instructions:
Read the following instructions very carefully and strictly follow them.
1. This question paper contains 38 questions in 8 printed pages. All questions are compulsory.
2. There is no overall choice. However internal choices have been provided in 3 questions of 3 marks
m
.co
category and 3 questions of 5 marks each.

m
.co m
3. Question 1 to 15 are MCQ type.

s e
em
4. Question 16 to 19 are Assertion Reason type questions and Question 20 to 23 are case- based questions.

s
5. Question 24 to 29 are short answer type I carry 2 marks each and 30 to 35 are short answer type
g l a
l a a
ag
II carry 3 marks each.
6. Question 36 to 38 are long answer type questions and carry 5 marks each.

SECTION-A
1. Which of the following is non-biodegradable? 1
(A) Vegetables
(B) Fruits
(C) Earthworm

om
(D) Aluminium foil

c
2. The component of air that gets „used up‟ during the process of photosynthesis: -
.
1

m
(A) Carbon dioxide
(B) Nitrogen
s e
l a
ag
(C) Oxygen
(D) Helium
3. You are provided with the following materials 1
(i) Pure water (ii) Mirror (iii) Stainless steel plate (iv) Glass tumbler.
Which of the above materials will you identify as transparent?
(A) (i) and (ii)
(B) (i) and (iii)
(C) (i) and (iv)
(D) (iii) and (iv)

m
4. In which of the following case, diffusion will be fastest? 1

.co
(A) A Gas in another gas
m
.co m
(B) A Gas in a liquid

m s e
(C) A Solid in a Liquid

s e la
(D) A liquid in another liquid

la ag
5. Rahul dissolved the impure sample of copper sulphate in water. Which method would he use 1

ag
to get back the pure solid copper sulphate from the solution?
(A) Decantation
(B) Sedimentation
(C) Crystallisation
(D) Condensation
6. 6. Which of the following mixtures would you be able to separate using the method of filtration? 1
(A) Oil in water
(B) Cornflakes in milk
(C) Salt in water

m .
.co m
(D) Sugar in milk

e
7. Cooking of food is an example of –
s
1

s em l a

l a ag
�

ag For more Question Papers, Sample Papers, Notes & Syllabus visit Page 1 of 8

(A) Fast change
(B) Reversible change
(C) Physical change
(D) Slow and chemical change
8. When we tear the paper, energy is – 1
(A) Absorbed
(B) Changed
(C) Generated
(D) Released
9. A piece of iron is left in damp air and rust appears. Which statement is correct? 1
(A) Physical change and can be reversed
(B) Physical change and cannot be reversed
(C) Chemical change and cannot be reversed
(D) Chemical change and can be reversed
10. Motion that repeats after equal intervals of time is known as: - 1
(A) Irregular motion
(B) Periodic motion
(C) Random motion
(D) Straight-line motion
11. Kiran wants to measure the length of the fencing of her garden. Kiran has a long wooden rod 1
and a 30 cm ruler. Identify the correct step that Kiran can do to measure the length of the
fencing easily: -
(A) Measure the length of the fencing using footsteps.
(B) Guess the length of rod required of fencing.
(C) Measure the length of the fencing using a hand span.
(D) Measure the length of the rod using the 30 cm ruler and then find the number of rod
lengths required for measuring the length of fencing.
12. Which of the following can show multiple types of motion at once? 1
(A) A car moving straight on the road
(B) The Earth
(C) A ball falling freely
(D) A child running straight
13. Select the correct characteristic of a bougainvillea plant: 1
(A) Small size plant with soft green stem.
(B) Tall plant with presence of strong and woody stem.
(C) Medium size plant with hard woody stem.
(D) Aquatic plant with long roots.
14. Cactus plants have spines instead of leaves located on their stem. Select the reason behind this 1
adaptation.
(A) To minimise the excess loss of water.
(B) To attract insect for pollination.
(C) The spines will later turn into flower.
(D) To promote loss of water.
15. Kanika noticed that her potted plant was not growing healthy. She put few earthworms into the 1
pot. After a few weeks, she noticed that her plants looked healthier. Choose the correct
possible reason for the plant getting healthier from the given options.
(A) Earthworms ate up the pests in the soil.
(B) Earthworms helped the plant to take in water.
(C) Earthworm helped in nitrogen fixation in soil.
(D) Earthworm helped in the process of decomposition in soil.

Q. No. 16 to Q. No. 19 are Assertion-Reason based questions where a statement of

�

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 2 of 8

m
om .co

c m
m. as e
se l
Assertion (A) is followed by a statement of Reason (R). Read the two statements carefully,

ag
to choose the correct answers from the options given below:
(A) Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct
explanation of the Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.
16. Assertion (A): The science book of Standard 6 is a matter. 1
Reason(R): The book occupies space and has some mass.

o m
17. Assertion (A): Evaporation is used to separate a mixture of salt and water. 1

m 1 .c
.co
Reason (R): In Sedimentation, heavier solid particles settle down in a liquid.

e1 m
18. Assertion (A): Burning of fuels is a physical change.

e m
Reason(R): A physical change is a reversible change.
las
19.
as
Assertion (A): A car moving on a straight road is an example of rectilinear motion.
l g
a 4
g
Reason (R): Rectilinear motion is the motion of an object along a straight line.
20.
a
Green plant makes their own food on the surface of their leaves. The synthesis of food in
plants occurs in their leaves, hence, leaves are called “food factory” of plants. Photosynthesis
helps to maintain balance between oxygen and carbon dioxide in the atmosphere. Chlorophyll
absorbs sunlight and traps energy. At the end of the process, carbohydrate and oxygen are
formed. Carbohydrate is used as food and oxygen is emitted out in the atmosphere.
(a) Identify the green colour pigment present in the leaves.
(b) Green plants are known as autotrophs. Give reason.
(c) Name any one biotic and one abiotic component present in environment.

m
.co
(d) In the given food chain identify primary and secondary consumer from the picture given
below.

e m
l as
ag
21. Rima went to play in the park with her father. She observed that all the states of matter exist in 4
the park in different forms. Some matters like wood, stone were rigid and had a fixed shape.
Some matters like water could flow and do not have fixed shape. The wind that was blowing
in the park could be felt but couldn‟t be seen. She also observed that some materials like thick
plastic sheet and frosted glass were lying on the floor. She also saw some old people sitting on
concrete benches and spending time with each other.

m
.co
(a) State one difference between solid and gas. (based on shape and volume)

m
(b) Pure water is a transparent liquid. Justify this statement.

.co e m
(c) How can the scent of a perfume spread in each corner of our home? Explain.

em las
(d) How does solubility change on increasing the temperature of water?

las g
22. Everything in this world undergoes a change. We observe many changes around us at home, 4

g a
school, in our surroundings. We realize that every change has caused. Change is therefore a

a
phenomenon, in which an object may become different in shape, size, position, and, at times,
even in its composition.
(a) Categorise the following as Slow or Fast change.
(i) change of seasons (ii) tearing of paper
(b) “Cutting of an apple is a physical change”. Justify.
(c) A potter working on his wheel shaped a lump of clay into a pot. He then baked the
clay pot in an oven. Identify any two-change observed in this situation.
(d) Mention one difference between reversible and irreversible change.

m .
23. A tailor is working on a sewing machine. Its wheel moves in a circular motion. The needle 4

.co e m
moves up and down continuously as the wheel rotates.

em l as
s

l a ag
�

ag For more Question Papers, Sample Papers, Notes & Syllabus visit Page 3 of 8

(a) Select the one that remains at rest –
Tailor and sewing machine OR Needle of the machine.
(b) Give an example from the above text, of the object, that is in a circular motion.
(c) Name the type of motion shown by the moving needle.
(d) Mention the S.I unit of speed.
24. X is a material, which we use in our daily life, especially to make bags out of it, but this 2
material is a threat to our environment, as it cannot be decomposed by the microorganisms and
thus accumulates in the nature.
(a) Identify this material X.
(b) Mention any one harmful effect that it causes to our atmosphere
25. Sheela, Saima and Ravi have to dissolve maximum amount of sugar in the same amount of 2
milk to win in a game. Ravi took hot boiling milk while Saima took ice cold milk. Sheela
managed to get milk at room temperature. Who will win the game and why?
26. Sonu added sand in a beaker containing water. The mixture is kept undisturbed for 1hour. 2

(a) Write the name of solid particle “X‟ settled in the above process after 1 hour.
(b) Name the method he should apply after 1 hour to separate water and solid
particle “X”.
27. A blacksmith heats a piece of iron to make a tool. After cooling, the tool becomes hard and 2
strong. Is this change reversible? Give reasons.
28. The following table shows the time taken by three students to walk 100 meters 2

Student Distance (m) Time(s)
Riya 100 100
Aman 100 120
Mira 100 90

(a) Name the student who came first in the race. Calculate the speed of the student
during the race.
(b) Identify the devices which are used to measure the following physical quantities: -
(i) Distance (ii) Time
29. Identify the animals given below and write one distinguishing characteristic of the animals 2
given below.

A B

�

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 4 of 8

m
om .co

c m
m. 30. as e
se l
3

ag

m
m .co
.co e m
(a) Briefly explain the act performed by the man in this picture. Suggest the correct practice.

em as
(b) Using jute bags is better than using plastic bags. Give reasons.

as
(c) Give two examples of biodegradable waste.
g l 3
l a
ag
31. In our environment oxygen and carbon dioxide balance must be there to support the life. With
the help of a flowchart show how different processes help to maintain the balance between
these gases in our environment.
32. X, Y and Z are three gaseous components of air. Gases X and Y can dissolve in the water of 3
rivers, but gas Z does not dissolve in water. The aquatic organisms which live in water use the
gas Y dissolved in water for respiration, for releasing energy from food.
(a) Name the gases X, Y.
(b) What happens to the solubility of a gas in water with the increase in the temperature of
water?

m
OR

.co
Write a suitable term for the following description –

m
(a) Fragrance of incense stick spreads in the entire enclosed space.

s e
(b) Naphthalene balls reduce in size on long-standing.

l a
ag
(c) No more salt gets dissolved in water at a given temperature.
33. 3

m
m .co
m .co s e m
s e g la
g la a
a
(a) Identify A and B.
(b) Write the differences between A and B. (Any one point)

OR

m .
.co s e m
s em l a

l a ag
�

ag For more Question Papers, Sample Papers, Notes & Syllabus visit Page 5 of 8

Observe the given picture of machine.

(a) Name the machine shown in the above picture and identify the process used for
separation of substances.
(b) Explain how this machine helps to separate the substances.
(c) Mention one application of this method in our real life.
34. Classify the following into physical and chemical changes – 3
(a) Expansion of metals on heating
(b) Crystallization of salt from solutions
(c) Blackening of silverware
(d) Ripening of fruits
(e) Cooking of food
(f) Melting of ice
OR
Complete the following table that shows different kind of changes.

Change Slow/ Fast change Physical/ Reversible/
Chemical change Irreversible
change
Glowing of bulb Fast A B
Freezing of water C Physical D
Heating of sugar in a pan E F Irreversible

35. Classify the following plants into categories of Herbs, Shrubs, and Trees: 3
Neem, Mint, Rose, Cotton, Vegetables, Mango.
36. (a) Observe the given activity: - 5

(i) Identify the process shown in the above activity.
(ii) It is always observed that after a storm if rainfall occurs then air become clear and
fresh in very quick span of time. Give reason for your observation.
(b) Suraj got a mixture of salt, sand and iron nail. Mention the different steps that
must be used to separate each substance from the mixture.
OR
(a) Water is taken in a stainless-steel container and heated. Heating is stopped and a lid is
placed on the container. What would be your observations?
(b) Name the process that is occurring above.

�

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 6 of 8

m
om .co

m.
c s em
se la
(c) A mixture of iron powder, camphor, sand, and common salt is kept on a table. Identify the

a g
methods of separation that are employed to separate the constituents from the mixture.

37. (a) Raghu and Shikha use the span of their hand to measure a table in a classroom. They have 5
different measurements of the same table. State reasons.
(b) How is the motion of the Earth around the Sun different from the motion of a pendulum?
(c) Mention the type of motion that occurs along a zig-zag path.
(d) Name a daily activity that involves both circular and rectilinear motion.
OR
(a) Rishab measured the length of the pencil using a broken ruler. The image shows the

m
.co
measurement by the broken ruler.

m
.co s e m
s em g l a
l a a
ag
Rishab made an error and records the length of the pencil as 7 cm. How can you help
Rishab to get correct measurement?

(b) You are playing with a toy car. It stands still, then you push it, and it starts moving. Later,

m
it hits a wall and stops.

m .co
(i) Analyse the toy‟s state at each step: before pushing, while moving, and after hitting the

s e
wall�

l a
(ii) Identify the physical quantity „X‟ that can make a body start moving from the rest

ag
position.
(c) Richa measured 10 m with the help of her foot while Shreya measured
the same distance with the help of measuring tape. Identify the correct procedure for
measuring the length from the above-mentioned situations. Give reason for your answer.

38. 5

m
m A .co
m .co s e m
e la
B

las g
(a) Identify A and B and classify them based on the presence of backbones.

g
(b) Give one example of –
a
a
(i) Animals that reproduce by dividing their bodies.
(ii) Animals that give birth to their young ones.
(iii) Animals with feathers.
OR

m .
.co s e m
s em l a

l a ag
�

ag For more Question Papers, Sample Papers, Notes & Syllabus visit Page 7 of 8

(a) Identify the organism and its type of heterotrophic nutrition.
(b) Illustrate any one point of difference between the above and saprophytic mode of nutrition.
(c) Give two examples of animals having soft bodies.

******

�

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 8 of 8