Class 10 Science
Previous Board Examination Question Paper – Set 5
Time: 3 Hours Maximum Marks: 80
General Instructions:
- All questions are compulsory.
- The question paper consists of Sections A, B, C, D and E.
- Use of calculator is not permitted.
- Draw neat and labelled diagrams wherever required.
Section A – MCQs
(1 × 20 = 20 Marks)
1. Which organelle is known as the powerhouse of the cell?
a) Nucleus b) Ribosome c) Mitochondria d) Chloroplast
2. Which metal is extracted by electrolysis?
a) Iron b) Copper c) Aluminium d) Zinc
3. The SI unit of electric charge is:
a) Ampere b) Coulomb c) Volt d) Ohm
4. The focal length of a convex mirror is:
a) Positive b) Negative c) Zero d) Infinite
5. Which blood vessel carries oxygenated blood from lungs to heart?
a) Pulmonary artery b) Pulmonary vein c) Aorta d) Vena cava
6. Which gas is used in fire extinguishers?
a) Oxygen b) Nitrogen c) Carbon dioxide d) Hydrogen
7. The pH of lemon juice is:
a) More than 7 b) Equal to 7 c) Less than 7 d) Equal to 14
8. Which form of energy is possessed by flowing water?
a) Potential energy b) Heat energy c) Kinetic energy d) Chemical energy
9. Which part of the ear helps in hearing?
a) Semicircular canals b) Cochlea c) Eustachian tube d) Auditory nerve
10. Which fertiliser provides nitrogen to plants?
a) Urea b) Gypsum c) Lime d) Potash
Section B – Very Short Answer
(2 × 5 = 10 Marks)
11. Define nutrition.
12. Write the chemical formula of slaked lime.
13. What is electric circuit?
14. What is seed dispersal?
15. Name the hormone responsible for fight or flight response.
Section C – Short Answer
(3 × 6 = 18 Marks)
16. Explain anaerobic respiration.
17. Write three differences between acids and bases.
18. State Faraday’s laws of electrolysis.
19. Describe the structure of brain with diagram.
20. Explain scattering of light.
21. What are renewable resources? Give examples.
Section D – Long Answer
(5 × 4 = 20 Marks)
22. Explain the process of nutrition in plants.
23. Describe reproduction in human beings.
24. Derive the formula for electric power.
25. Explain the working of human ear with diagram.
Section E – Case Study Based Questions
(4 × 3 = 12 Marks)
26. A student observed that plants bend towards light.
a) Name the phenomenon.
b) Which hormone is responsible?
c) Why does this phenomenon occur?
Shaktimatha CBSE Learning
Class 10 Science – Previous Board Exam Question Paper (Set 5)
⬅️ Back to Class 10 Science Library
🔬 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
- Question Paper – Set 1
- Question Paper – Set 2
- Question Paper – Set 3
- Question Paper – Set 4
- Question Paper – Set 5
✍️ Full Answers (Student Writing Style)
- Full Answers – Set 1
- Full Answers – Set 2
- Full Answers – Set 3
- Full Answers – Set 4
- Full Answers – Set 5
📚 Additional Board Sets (Practice)
- Additional Question Paper – Set 1A
- Additional Full Answers – Set 1A
- Additional Question Paper – Set 2A
- Additional Full Answers – Set 2A
- Additional Question Paper – Set 3A
- Additional Full Answers – Set 3A
✔ First attempt the question paper on your own
✔ Then compare with full answers
✔ Observe diagrams, keywords, and steps
✔ Practise again to improve speed and accuracy
Prepared with dedication by Shaktimatha Learning ✨
Clear concepts • Exam confidence • Board success
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