Who was the first to prove the Earth revolves around the Sun? MCQ with Answer and Explanation

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Who was the first to prove the Earth revolves around the Sun?

A. Nicolaus Copernicus

B. Galileo Galilei

C. Johannes Kepler

D. Isaac Newton

Answer: Option A

Solution (By JKSSB Mock Tests)

Copernicus proposed the heliocentric model.

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Who was the first woman to win the Best Director at Berlin Film Festival?

A. Kathryn Bigelow

B. Marjorie Prime team

C. Various

D. Agnès Varda

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Correct Answer: Option D

Explanation:
Early female winners noted.

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Question #2

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Who invented the radio?

A. Nikola Tesla

B. Thomas Edison

C. Alexander Graham Bell

D. Guglielmo Marconi

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Correct Answer: Option D

Explanation:
Guglielmo Marconi is credited with developing practical radio.

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Question #3

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Who invented the cotton gin?

A. James Hargreaves

B. Eli Whitney

C. John Kay

D. Samuel Crompton

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Correct Answer: Option B

Explanation:
Eli Whitney invented the cotton gin.

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