Who discovered the first extrasolar planet around a main-sequence star? MCQ with Answer and Explanation

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Who discovered the first extrasolar planet around a main-sequence star?

A. Aleksander Wolszczan

B. Geoffrey Marcy

C. Debra Fischer

D. Michel Mayor and Didier Queloz

Answer: Option D

Solution (By JKSSB Mock Tests)

51 Pegasi b.

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

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Who was the first woman to win the Indira Gandhi Prize for Peace?

A. Aung San Suu Kyi

B. Ellen Johnson Sirleaf

C. Gro Harlem Brundtland

D. Wangari Maathai

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Correct Answer: Option A

Explanation:
Aung San Suu Kyi received it among other honors.

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Question #2

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Who was the first person to formulate the laws of thermodynamics?

A. James Joule

B. Rudolf Clausius

C. Sadi Carnot

D. Lord Kelvin

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Correct Answer: Option B

Explanation:
Rudolf Clausius formulated the first and second laws of thermodynamics.

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Question #3

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Who was the first person to successfully undergo an artificial heart transplant?

A. William DeVries

B. Michael DeBakey

C. Robert Jarvik

D. Barney Clark

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Correct Answer: Option D

Explanation:
Barney Clark became the first recipient of a permanent artificial heart (the Jarvik-7) in 1982.

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