Latest MCQs on Universe for Competitive Exams

91. What is the name of the first spacecraft to land on the Moon and transmit data?
A) Luna 2
B) Apollo 11
C) Surveyor 1
D) Ranger 4
Correct Answer: C) Surveyor 1
Explanation: NASA’s Surveyor 1 soft-landed in 1966, returning over 11,000 images.

92. Which planet has the most similar gravity to Earth?
A) Mars
B) Venus
C) Mercury
D) Jupiter
Correct Answer: B) Venus
Explanation: Venus’s surface gravity is 8.87 m/s² compared to Earth’s 9.81 m/s².

93. Which planet in the solar system has the shortest orbital period around the Sun?
A) Mercury
B) Venus
C) Earth
D) Mars
Correct Answer: A) Mercury
Explanation: Mercury completes its orbit around the Sun in just 88 Earth days.

94. What is the name of the first spacecraft to successfully land on Mars and transmit images back to Earth?
A) Viking 1
B) Pathfinder
C) Curiosity
D) Opportunity
Correct Answer: A) Viking 1
Explanation: Viking 1 was the first spacecraft to land on Mars and send images back to Earth.

95. Which planet is known for its retrograde rotation, spinning in the opposite direction to most planets?
A) Venus
B) Mars
C) Jupiter
D) Saturn
Correct Answer: A) Venus
Explanation: Venus rotates from east to west, opposite to most other planets.

96. What is the name of the largest moon of Saturn?
A) Titan
B) Ganymede
C) Callisto
D) Europa
Correct Answer: A) Titan
Explanation: Titan is Saturn’s largest moon and the second largest in the solar system.

97. Which planet is known as the “Evening Star” due to its bright appearance after sunset?
A) Venus
B) Mars
C) Mercury
D) Jupiter
Correct Answer: A) Venus
Explanation: Venus is often visible after sunset, earning the name “Evening Star”.

98. What is the name of the first artificial satellite to orbit the Earth?
A) Explorer 1
B) Sputnik 1
C) Luna 2
D) Vanguard 1
Correct Answer: B) Sputnik 1
Explanation: Sputnik 1 was launched by the Soviet Union in 1957.

99. Which planet has the largest volcano in the solar system?
A) Mars
B) Earth
C) Venus
D) Mercury
Correct Answer: A) Mars
Explanation: Olympus Mons on Mars is the tallest volcano in the solar system.

100. What is the main component of the atmosphere of Mars?
A) Oxygen
B) Nitrogen
C) Carbon Dioxide
D) Methane
Correct Answer: C) Carbon Dioxide
Explanation: Mars’ atmosphere is mostly carbon dioxide.