The invention of Teflon (PTFE) was an accidental discovery by which chemist in 1938? MCQ with Answer and Explanation

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The invention of Teflon (PTFE) was an accidental discovery by which chemist in 1938?

A. Wallace Carothers

B. Roy Plunkett

C. Gideon Sundback

D. Leo Baekeland

Answer: Option B

Solution (By JKSSB Mock Tests)

Roy J. Plunkett accidentally discovered polytetrafluoroethylene (Teflon) while researching alternative chlorofluorocarbon refrigerants.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The vaccine for smallpox was developed by whom in 1796?

A. Louis Pasteur

B. Edward Jenner

C. Robert Koch

D. Alexander Fleming

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Correct Answer: Option B

Explanation:
Edward Jenner introduced the smallpox vaccine using cowpox material, pioneering the field of vaccinology.

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Question #2

Who invented the mechanical cotton spinning machine known as the 'Spinning Jenny' in 1764?

A. Samuel Crompton

B. Richard Arkwright

C. Eli Whitney

D. James Hargreaves

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Correct Answer: Option D

Explanation:
James Hargreaves invented the multi-spool spinning frame, significantly accelerating yarn production in early textile factories.

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Question #3

Who is the inventor of the Richter Scale used to measure the magnitude of earthquakes?

A. Giuseppe Mercalli

B. Alfred Wegener

C. Charles Richter

D. James Hutton

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Correct Answer: Option C

Explanation:
Charles F. Richter developed the Richter magnitude scale in 1935 in partnership with Beno Gutenberg.

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