Who was the first astronaut to walk in space? MCQ with Answer and Explanation

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Who was the first astronaut to walk in space?

A. Yuri Gagarin

B. Buzz Aldrin

C. Neil Armstrong

D. Alexei Leonov

Answer: Option D

Solution (By JKSSB Mock Tests)

Alexei Leonov performed the first spacewalk in 1965.

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

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Question #1

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Who was the first person to develop a workable theory of entropy?

A. Lord Kelvin

B. James Clerk Maxwell

C. Ludwig Boltzmann

D. Rudolf Clausius

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Correct Answer: Option D

Explanation:
Clausius introduced the concept of entropy in 1865.

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

Question #2

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Who was the first person to fly across the Atlantic Ocean?

A. Alcock and Brown

B. Louis Blériot

C. Amelia Earhart

D. Charles Lindbergh

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Correct Answer: Option A

Explanation:
John Alcock and Arthur Brown completed the first non-stop transatlantic flight in 1919.

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

Question #3

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Who invented the refrigerator?

A. Carl von Linde

B. William Cullen

C. Jacob Perkins

D. Oliver Evans

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Correct Answer: Option C

Explanation:
Jacob Perkins built the first practical vapor-compression refrigerator.

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