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1. Which metal is used in electrical wiring
Correct Answer: D
Your Answer: D
2. Which gas is required for combustion
Correct Answer: D
Your Answer: D
3. Which gas is used by plants during photosynthesis
Correct Answer: B
Your Answer: B
4. Which vitamin is produced in the human body by sunlight
Correct Answer: D
Your Answer: D
5. Which organ filters blood in the human body
Correct Answer: D
Your Answer: D
6. Which organ pumps blood in the human body
Correct Answer: D
Your Answer: D
7. Which layer protects Earth from harmful UV rays
Correct Answer: D
Your Answer: D
8. Which part of the brain controls balance
Correct Answer: B
Your Answer: A
9. Which gas causes the greenhouse effect
Correct Answer: B
Your Answer: B
10. Which disease is caused by deficiency of iodine
Correct Answer: C
Your Answer: C
11. Which part of the plant conducts photosynthesis
Correct Answer: C
Your Answer: C
12. Which instrument measures temperature
Correct Answer: D
Your Answer: D
13. Which gas is essential for human respiration
Correct Answer: B
Your Answer: B
14. Which organ produces insulin
Correct Answer: C
Your Answer: C
15. The SI unit of energy is
Correct Answer: C
Your Answer: C
16. Which force pulls objects toward the Earth
Correct Answer: A
Your Answer: A
17. Which gas is most abundant in Earth’s atmosphere
Correct Answer: B
Your Answer: B
18. What is the SI unit of electric current
Correct Answer: D
Your Answer: D
19. Which vitamin helps in blood clotting
Correct Answer: A
Your Answer: A
20. Which organ helps in breathing
Correct Answer: D
Your Answer: D
21. Which device converts electrical energy into mechanical energy
Correct Answer: A
Your Answer: A
22. Which metal is liquid at room temperature
Correct Answer: A
Your Answer: A
23. Which blood component helps in clotting
Correct Answer: C
Your Answer: C
24. What is the chemical formula of water
Correct Answer: B
Your Answer: B
25. Which vitamin deficiency causes night blindness
Correct Answer: B
Your Answer: B
26. Which gas is commonly used in balloons
Correct Answer: A
Your Answer: A
27. What is the boiling point of water at sea level
Correct Answer: B
Your Answer: B
28. Which blood cells fight infection
Correct Answer: C
Your Answer: C
29. Which planet is known as the Red Planet
Correct Answer: D
Your Answer: D
30. Which organ produces bile in the human body
Correct Answer: B
Your Answer: B