Who invented the safety pin? MCQ with Answer and Explanation

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Who invented the safety pin?

A. Walter Hunt

B. Charles Goodyear

C. Isaac Singer

D. Elias Howe

Answer: Option A

Solution (By JKSSB Mock Tests)

Walter Hunt invented the safety pin.

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 map the ocean floor?

A. Marie Tharp

B. Jacques Cousteau

C. William Beebe

D. Sylvia Earle

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Correct Answer: Option A

Explanation:
Marie Tharp created the first comprehensive scientific map of the Atlantic Ocean floor.

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

Question #2

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Who invented the computer mouse?

A. Alan Turing

B. Steve Jobs

C. Douglas Engelbart

D. Bill Gates

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Correct Answer: Option C

Explanation:
Douglas Engelbart invented the computer mouse in the 1960s.

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Question #3

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Who was the first to reach the summit of Cho Oyu?

A. Edmund Hillary

B. Herbert Tichy

C. Tenzing Norgay

D. Reinhold Messner

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Correct Answer: Option B

Explanation:
Herbert Tichy led the first ascent.

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

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