Who invented the ballpoint pen? MCQ with Answer and Explanation

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Who invented the ballpoint pen?

A. László Bíró

B. Marcel Bich

C. Lewis Waterman

D. John Loud

Answer: Option A

Solution (By JKSSB Mock Tests)

László Bíró invented the modern ballpoint pen.

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

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Question #1

Who invented the pacemaker?

A. John Hopps

B. Rune Elmqvist

C. Wilson Greatbatch

D. Paul Zoll

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Correct Answer: Option C

Explanation:
Wilson Greatbatch invented the implantable pacemaker.

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

Question #2

Who discovered the first habitable zone super-Earth?

A. NASA

B. Kepler

C. Gliese 581 team

D. Both

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Correct Answer: Option C

Explanation:
Gliese 581c/d.

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Question #3

Who was the first person to travel to the bottom of the Mariana Trench?

A. Victor Vescovo

B. Jacques Piccard and Don Walsh

C. James Cameron

D. Sylvia Earle

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Correct Answer: Option B

Explanation:
They achieved this in 1960 aboard the Trieste.

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

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