Who was the first astronaut to orbit the Earth? MCQ with Answer and Explanation

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Who was the first astronaut to orbit the Earth?

A. John Glenn

B. Valentina Tereshkova

C. Yuri Gagarin

D. Alan Shepard

Answer: Option C

Solution (By JKSSB Mock Tests)

Yuri Gagarin completed the first orbit of Earth.

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Question #1

Who was the first person to produce a television broadcast?

A. Philo Farnsworth

B. John Logie Baird

C. Charles Jenkins

D. Vladimir Zworykin

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Correct Answer: Option B

Explanation:
John Logie Baird demonstrated the first public television broadcast in London in 1926.

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Question #2

Which country built the first supersonic commercial airplane?

A. United States

B. France

C. Soviet Union

D. United Kingdom

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Correct Answer: Option C

Explanation:
The Soviet Tupolev Tu-144 was the first supersonic transport aircraft to fly, in 1968.

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Question #3

Who discovered the first potentially rocky exoplanet?

A. NASA

B. Kepler team

C. Michel Mayor

D. Both

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Correct Answer: Option B

Explanation:
Kepler-10b.

This question belongs to: Static General Knowledge First in the World

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