Solar System and Planets MCQs

1. Which planet is the closest to the Sun?
(A) Venus
(B) Mercury
(C) Earth
(D) Mars

2. Which planet is known as the “Red Planet”?
(A) Jupiter
(B) Venus
(C) Mars
(D) Saturn

3. How many planets are there in the Solar System?
(A) 7
(B) 8
(C) 9
(D) 10

4. Which planet has the largest number of moons?
(A) Earth
(B) Jupiter
(C) Saturn
(D) Neptune

5. Which planet is the largest in the Solar System?
(A) Mars
(B) Jupiter
(C) Neptune
(D) Uranus

6. Which planet is known for its beautiful rings?
(A) Venus
(B) Jupiter
(C) Saturn
(D) Uranus

7. Which is the only planet known to support life?
(A) Mars
(B) Earth
(C) Venus
(D) Neptune

8. Which planet has the longest day (rotation period) in the Solar System?
(A) Venus
(B) Jupiter
(C) Mercury
(D) Uranus

9. Which is the smallest planet in the Solar System?
(A) Mars
(B) Mercury
(C) Pluto
(D) Neptune

10. Which planet is known as the “Morning Star” or “Evening Star”?
(A) Mars
(B) Mercury
(C) Venus
(D) Saturn

11. Which planet has the fastest rotation?
(A) Jupiter
(B) Earth
(C) Neptune
(D) Mars

12. What is the main component of the Sun?
(A) Oxygen
(B) Carbon
(C) Hydrogen
(D) Helium

13. Which planet has the Great Red Spot, a giant storm?
(A) Saturn
(B) Jupiter
(C) Uranus
(D) Neptune

14. Which planet has the coldest average temperature?
(A) Neptune
(B) Uranus
(C) Pluto
(D) Mars

15. Which planet rotates on its side, making it unique in the Solar System?
(A) Jupiter
(B) Saturn
(C) Uranus
(D) Venus

16. What is the name of Earth’s natural satellite?
(A) Phobos
(B) Deimos
(C) The Moon
(D) Titan

17. What is the name of the largest volcano in the Solar System, found on Mars?
(A) Olympus Mons
(B) Mauna Loa
(C) Vesuvius
(D) Mount Everest

18. Which planet has the most elliptical (oval-shaped) orbit?
(A) Earth
(B) Mars
(C) Mercury
(D) Pluto

19. What is the term for a rocky body that orbits the Sun but is too small to be a planet?
(A) Comet
(B) Asteroid
(C) Meteor
(D) Satellite

20. What is the Kuiper Belt?
(A) A ring around Saturn
(B) A region of icy bodies beyond Neptune
(C) A storm on Jupiter
(D) The outermost layer of the Sun