🧪 20 Short Science Quiz (With Answers)
1. Water freezes at:
✅ Answer: A. 0°C
2. The Sun is a:
✅ Answer: B. Star
3. Human heart has:
✅ Answer: C. 4 chambers
4. The largest planet is:
✅ Answer: C. Jupiter
5. Plants make food by:
✅ Answer: C. Photosynthesis
6. Oxygen is essential for:
✅ Answer: D. All of these
7. The boiling point of water is:
✅ Answer: C. 100°C
8. Which gas do plants absorb?
✅ Answer: C. Carbon dioxide
9. The brain is part of:
✅ Answer: B. Nervous system
10. The hardest substance is:
✅ Answer: C. Diamond
11. Earth revolves around the:
✅ Answer: B. Sun
12. Blood is red due to:
✅ Answer: C. Hemoglobin
13. Sound travels fastest in:
✅ Answer: C. Solid
14. Which organ helps in breathing?
✅ Answer: C. Lungs
15. Electricity is measured in:
✅ Answer: D. All of these
16. The SI unit of force is:
✅ Answer: C. Newton
17. Which vitamin is produced in sunlight?
✅ Answer: D. Vitamin D
18. Which gas is used in balloons?
✅ Answer: C. Helium
19. The smallest unit of life is:
✅ Answer: B. Cell
20. Which metal is liquid at room temperature?
✅ Answer: B. Mercury