Latest MCQs on Universe for Competitive Exams

1. Which planet is known as the “Red Planet” due to its reddish appearance?
A) Venus
B) Mars
C) Jupiter
D) Saturn
Correct Answer: B) Mars
Explanation: Mars appears red because of iron oxide (rust) on its surface.

2. What is the largest planet in our solar system by mass?
A) Earth
B) Jupiter
C) Saturn
D) Neptune
Correct Answer: B) Jupiter
Explanation: Jupiter is the largest planet in the solar system by both mass and volume.

3. Which planet is closest to the Sun?
A) Venus
B) Mercury
C) Earth
D) Mars
Correct Answer: B) Mercury
Explanation: Mercury is the innermost planet in the solar system.

4. What is the name of our galaxy?
A) Andromeda
B) Milky Way
C) Triangulum
D) Whirlpool
Correct Answer: B) Milky Way
Explanation: The Milky Way is the galaxy that contains our solar system.

5. Which planet has the most extensive and visible ring system?
A) Jupiter
B) Saturn
C) Uranus
D) Neptune
Correct Answer: B) Saturn
Explanation: Saturn’s rings are the most prominent and easily visible from Earth.

6. What is the closest star to Earth after the Sun?
A) Sirius
B) Proxima Centauri
C) Alpha Centauri A
D) Betelgeuse
Correct Answer: B) Proxima Centauri
Explanation: Proxima Centauri is the nearest star to the Sun.

7. Which planet is known for its Great Red Spot, a giant storm?
A) Mars
B) Jupiter
C) Saturn
D) Neptune
Correct Answer: B) Jupiter
Explanation: Jupiter’s Great Red Spot is a massive, persistent storm.

8. What is a light-year a measure of?
A) Time
B) Distance
C) Speed
D) Brightness
Correct Answer: B) Distance
Explanation: A light-year is the distance light travels in one year.

9. Which planet is known as the “Morning Star” or “Evening Star”?
A) Mars
B) Venus
C) Mercury
D) Jupiter
Correct Answer: B) Venus
Explanation: Venus is often visible just before sunrise or after sunset.

10. Which planet has a day longer than its year?
A) Mercury
B) Venus
C) Mars
D) Jupiter
Correct Answer: B) Venus
Explanation: Venus rotates so slowly that its day is longer than its year.