Tuesday, 20 January 2026

 

Class 10 Science

Previous Board Examination – Question Paper (Set 2)

Time: 3 Hours    Maximum Marks: 80


General Instructions:

  1. All questions are compulsory.
  2. The question paper consists of Sections A, B, C, D and E.
  3. Use of calculator is not permitted.
  4. Draw neat and labelled diagrams wherever required.

Section A – MCQs

(1 × 20 = 20 Marks)

1. Which mirror is used as a rear-view mirror in vehicles?

a) Concave   b) Convex   c) Plane   d) Cylindrical

2. The chemical formula of baking soda is:

a) Na2CO3   b) NaHCO3   c) CaCO3   d) NaOH

3. Which gas is released during photosynthesis?

a) Oxygen   b) Carbon dioxide   c) Nitrogen   d) Hydrogen

4. The unit of electric resistance is:

a) Ampere   b) Volt   c) Ohm   d) Watt

5. Which part of the brain controls voluntary actions?

a) Cerebellum   b) Medulla   c) Cerebrum   d) Pons

Section B – Very Short Answer

(2 × 5 = 10 Marks)

6. Define focal length of a lens.

7. What is a balanced chemical equation?

8. Name the female reproductive part of a flower.

9. What is meant by electric power?

10. Write one function of bile juice.

Section C – Short Answer

(3 × 6 = 18 Marks)

11. State the laws of refraction of light.

12. Explain the process of neutralisation with an example.

13. What is vegetative propagation? Write one advantage.

14. Write any three differences between acids and bases.

15. What is meant by reflex action? Give one example.

16. Define magnification. Write its formula.

Section D – Long Answer

(5 × 4 = 20 Marks)

17. Explain the formation of image by a concave mirror with a ray diagram.

18. Describe the preparation of washing soda.

19. Explain the process of respiration in human beings with a diagram.

20. State and explain Joule’s law of heating.

Section E – Case Study Based

(4 × 3 = 12 Marks)

21. Rahul noticed that electric appliances become hot when used for a long time.

a) Name the effect involved.
b) Write one application of this effect.
c) State one disadvantage of this effect.


Shaktimatha CBSE Learning
Class 10 Science – Previous Board Exam Question Paper (Set 2)

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🔬 Class 10 Science – Previous Board Question Papers & Full Answers

This complete library is designed for Class 10 CBSE students to practise previous board exam papers and learn how to write perfect answers in Physics, Chemistry, and Biology.


📝 Previous Board Question Papers


✍️ Full Answers (Student Writing Style)


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✔ First attempt the question paper on your own
✔ Then compare with full answers
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✔ Practise again to improve speed and accuracy

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