The invention of the common household safety glass used in car windows was an accidental discovery by whom? MCQ with Answer and Explanation

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The invention of the common household safety glass used in car windows was an accidental discovery by whom?

A. Roy Plunkett

B. Édouard Bénédictus

C. King Gillette

D. Leo Baekeland

Answer: Option B

Solution (By JKSSB Mock Tests)

Bénédictus dropped a glass flask coated with a dried cellulose nitrate plastic film in 103, discovering that the shards held together.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

The term 'vitamin' was coined by which biochemist in 1912?

A. Frederick Hopkins

B. Casimir Funk

C. Louis Pasteur

D. Robert Koch

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Correct Answer: Option B

Explanation:
Polish biochemist Casimir Funk coined the term 'vitamine' (later shortened to vitamin) to describe vital amine nutrients.

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Question #2

The electron was discovered in 1897 by which of the following physicists?

A. James Chadwick

B. Ernest Rutherford

C. John Dalton

D. J.J. Thomson

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Correct Answer: Option D

Explanation:
J.J. Thomson discovered the electron through his experiments with cathode ray tubes in 1897.

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Question #3

Who discovered that light travels in packets of discrete energy called photons, explaining the Photoelectric Effect?

A. Louis de Broglie

B. Max Planck

C. Niels Bohr

D. Albert Einstein

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Correct Answer: Option D

Explanation:
Albert Einstein won the 1921 Nobel Prize in Physics for his 1905 paper applying quantum concepts to the photoelectric effect.

This question belongs to: Static General Knowledge Inventions and Discoveries

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