The invention of high-strength Kevlar fiber, used in body armor, is credited to which female chemist? MCQ with Answer and Explanation

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The invention of high-strength Kevlar fiber, used in body armor, is credited to which female chemist?

A. Marie Curie

B. Stephanie Kwolek

C. Rosalind Franklin

D. Dorothy Hodgkin

Answer: Option B

Solution (By JKSSB Mock Tests)

Stephanie Kwolek invented the exceptionally strong synthetic fiber Kevlar at DuPont in 1965.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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The invention of the common mechanical cash layout system tracking mechanism was expanded by which major corporation?

A. IBM

B. NCR (National Cash Register) under John H. Patterson

C. Xerox

D. Microsoft

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Correct Answer: Option B

Explanation:
NCR purchased Ritty's early patents and scaled mechanical register verification across retail networks globally.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who invented the first operational hot air balloon, executing the first recorded human flight?

A. Montgolfier Brothers

B. Wright Brothers

C. Count Ferdinand von Zeppelin

D. Otto Lilienthal

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Correct Answer: Option A

Explanation:
Joseph-Michel and Jacques-Étienne Montgolfier developed and demonstrated the hot air balloon in France in 1783.

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Question #3

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Who discovered the radioactive elements Radium and Polonium?

A. Henri Becquerel

B. Ernest Rutherford

C. Marie and Pierre Curie

D. Otto Hahn

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Correct Answer: Option C

Explanation:
Marie Skłodowska-Curie and her husband Pierre isolated polonium and radium from pitchblende ore in 1898.

This question belongs to: Static General Knowledge Inventions and Discoveries

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