Who invented the jet engine? MCQ with Answer and Explanation

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Who invented the jet engine?

A. Hans von Ohain

B. Frank Whittle

C. Wright Brothers

D. Both

Answer: Option D

Solution (By JKSSB Mock Tests)

Whittle and von Ohain independently developed jet engines.

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Question #1

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Which country was the first to legalize same-sex marriage?

A. Belgium

B. Netherlands

C. Denmark

D. Canada

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Correct Answer: Option B

Explanation:
The Netherlands was the first country to legalize same-sex marriage in 2001.

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Question #2

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Who was the first to reach the summit of Manaslu?

A. Reinhold Messner

B. Toshio Imanishi

C. Fritz Moravec

D. Hermann Buhl

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Correct Answer: Option B

Explanation:
Japanese expedition in 1956.

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Question #3

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Which country built the first supersonic commercial airplane?

A. United Kingdom

B. Soviet Union

C. France

D. United States

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Correct Answer: Option B

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

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