SEE PRACTICE SET-4 (SCIENCE)

SEE Model Question Paper – 2082 (Science)

Class: 10
Subject: Science
Full Marks: 75
Time: 2 Hours

Instructions to Candidates:

• All questions are compulsory.

• Use of a calculator is allowed.

• Show the necessary steps in numerical problems.

• Draw neat and properly labeled diagrams wherever necessary.

---

Section A: Multiple Choice Questions (15 × 1 = 15 marks)

Each question carries 1 mark. Choose the correct alternative.

1. The SI unit of acceleration is:
   a) m/s
   b) m/s²
   c) N
   d) J

2. Which law of motion explains “action and reaction forces are equal and opposite”?
   a) Newton’s first law
   b) Newton’s second law
   c) Newton’s third law
   d) Law of gravitation

3. If a body of mass 2 kg is lifted through a height of 5 m, the work done is:
   a) 10 J
   b) 20 J
   c) 50 J
   d) 100 J

4. Which of the following is a non-contact force?
   a) Friction
   b) Normal force
   c) Magnetic force
   d) Tension

5. Which metal is stored under kerosene oil to prevent reaction with air?
   a) Iron
   b) Copper
   c) Sodium
   d) Aluminum

6. The chemical formula of washing soda is:
   a) NaHCO₃
   b) Na₂CO₃·10H₂O
   c) CaCO₃
   d) KOH

7. Which gas is released during the reaction of an acid with a metal?
   a) CO₂
   b) O₂
   c) N₂
   d) H₂

8. Which of the following is a greenhouse gas?
   a) Argon
   b) Oxygen
   c) Carbon dioxide
   d) Helium

9. Which vitamin is synthesized in the skin in the presence of sunlight?
   a) Vitamin A
   b) Vitamin C
   c) Vitamin D
   d) Vitamin K

10. The process by which plants lose water through stomata is called:
    a) Photosynthesis
    b) Respiration
    c) Transpiration
    d) Excretion

11. Which part of the brain controls voluntary actions?
    a) Medulla
    b) Cerebellum
    c) Cerebrum
    d) Hypothalamus

12. The functional unit of the kidney is:
    a) Neuron
    b) Nephron
    c) Glomerulus
    d) Alveolus

13. Which of the following is a communicable disease?
    a) Diabetes
    b) Tuberculosis
    c) Cancer
    d) Hypertension

14. The blood component that transports oxygen is:
    a) WBC
    b) Plasma
    c) Platelets
    d) RBC

15. The process of splitting glucose into pyruvate in the cytoplasm is called:
    a) Glycolysis
    b) Krebs cycle
    c) Fermentation
    d) Respiration

---

Section B: Short Answer Questions (6 × 5 = 30 marks)

16. A motor car of mass 1000 kg is moving with a velocity of 20 m/s. Calculate its momentum and kinetic energy. (2.5+2.5)

17. State Pascal’s law of pressure. Write two applications of it in daily life.

18. What is meant by isotopes? Write any two uses of isotopes.

19. Define acid and base with one example of each. Write the neutralization reaction between HCl and NaOH.

20. Write two differences between aerobic and anaerobic respiration. Explain why anaerobic respiration is less efficient.

21. What are platelets? Write their role in blood clotting with an example of how it prevents blood loss.

---

Section C: Long Answer / Structured Questions (3 × 10 = 30 marks)

22. A stone of mass 500 g is dropped from a height of 20 m. (Take g = 10 m/s²)
    a) Calculate the potential energy at the top.
    b) Calculate the velocity just before reaching the ground.
    c) Prove the conservation of energy from this situation. (3+3+4)

23. Draw a neat and labeled diagram of the human excretory system. Explain the structure and function of the nephron.

24. Explain the process of photosynthesis in plants. Write the balanced chemical equation. Describe three factors affecting photosynthesis. Draw a labeled diagram of a leaf showing stomata.