Latest MCQs on Universe for Competitive Exams

221. Which planet is known for its “diamond rain” phenomenon?
A) Neptune
B) Uranus
C) Jupiter
D) Saturn
Correct Answer: B) Uranus
Explanation: Uranus is believed to have diamond rain deep in its atmosphere.

222. What is the name of the first spacecraft to orbit the Sun?
A) Luna 1
B) Helios 1
C) Parker Solar Probe
D) Ulysses
Correct Answer: A) Luna 1
Explanation: Luna 1 was the first spacecraft to orbit the Sun.

223. Which planet has the highest albedo (reflectivity) in the solar system?
A) Venus
B) Earth
C) Jupiter
D) Saturn
Correct Answer: A) Venus
Explanation: Venus reflects about 70% of the sunlight that hits it due to its thick cloud cover.

224. What is the name of the first spacecraft to land on a comet?
A) Philae
B) Hayabusa
C) Stardust
D) Deep Impact
Correct Answer: A) Philae
Explanation: Philae landed on comet 67P/Churyumov–Gerasimenko in 2014.

225. Which planet has the largest core relative to its size?
A) Mercury
B) Earth
C) Mars
D) Venus
Correct Answer: A) Mercury
Explanation: Mercury’s core makes up a large portion of its volume.

226. What is the name of the first spacecraft to orbit Saturn?
A) Cassini
B) Voyager 2
C) Galileo
D) Pioneer 11
Correct Answer: A) Cassini
Explanation: Cassini orbited Saturn from 2004 to 2017.

227. Which planet is known for its “blue spot” storm?
A) Neptune
B) Uranus
C) Jupiter
D) Saturn
Correct Answer: A) Neptune
Explanation: Neptune’s Great Dark Spot is sometimes called the “blue spot.”

228. What is the name of the first spacecraft to orbit Venus?
A) Venera 9
B) Magellan
C) Mariner 2
D) Akatsuki
Correct Answer: A) Venera 9
Explanation: Venera 9 was the first spacecraft to orbit Venus.

229. Which planet has the highest escape velocity?
A) Jupiter
B) Saturn
C) Neptune
D) Uranus
Correct Answer: A) Jupiter
Explanation: Jupiter’s escape velocity is the highest in the solar system.

230. What is the name of the first spacecraft to land on the Moon’s far side?
A) Chang’e 4
B) Luna 2
C) Surveyor 1
D) Apollo 11
Correct Answer: A) Chang’e 4
Explanation: Chang’e 4 landed on the far side of the Moon in 2019.