Science Quiz

🧪 Science Quiz – 20 Questions

1. What is the boiling point of water?
90°C
100°C
110°C
2. Which planet is known as the Red Planet?
Venus
Mars
Jupiter
3. What gas do plants absorb from the air?
Oxygen
Nitrogen
Carbon Dioxide
4. What is H2O?
Hydrogen Peroxide
Water
Salt
5. Which organ pumps blood in the human body?
Brain
Lungs
Heart
6. What is the main source of energy for Earth?
Moon
Sun
Stars
7. Which part of the plant makes food?
Root
Leaf
Stem
8. What is the chemical symbol of gold?
Ag
Au
Gd
9. How many bones are there in a human body?
206
210
180
10. Which gas do humans exhale?
Carbon Dioxide
Oxygen
Hydrogen
11. Which is the smallest planet in our solar system?
Earth
Mercury
Venus
12. Which vitamin is produced in the skin on exposure to sunlight?
Vitamin A
Vitamin C
Vitamin D
13. What part of the cell contains DNA?
Nucleus
Cytoplasm
Cell wall
14. Which metal is liquid at room temperature?
Iron
Mercury
Copper
15. Which planet has rings?
Earth
Saturn
Mars
16. What is the unit of force?
Watt
Newton
Joule
17. Which organ is responsible for breathing?
Lungs
Liver
Heart
18. What is the largest organ in the human body?
Liver
Skin
Brain
19. What do bees collect from flowers?
Nectar
Pollen
Water
20. Which instrument is used to measure temperature?
Thermometer
Barometer
Anemometer

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