Who discovered the process of vulcanization, which makes natural rubber durable and temperature-resistant? MCQ with Answer and Explanation

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Who discovered the process of vulcanization, which makes natural rubber durable and temperature-resistant?

A. Charles Goodyear

B. Leo Baekeland

C. Wallace Carothers

D. John Dunlop

Answer: Option A

Solution (By JKSSB Mock Tests)

Charles Goodyear accidentally discovered that heating sulfur-treated natural rubber creates a stable, cross-linked polymer matrix.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The invention of the electronic compiler, which translates high-level source code into computer machine language, was achieved by whom?

A. Alan Turing

B. John von Neumann

C. Grace Hopper

D. Charles Babbage

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Correct Answer: Option C

Explanation:
Rear Admiral Grace Hopper created the A-0 compiler in 1951 and was instrumental in developing the COBOL language.

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Question #2

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Who discovered that structural chemical atoms are arranged in strict configurations characterized by coordination numbers, founding inorganic stereochemistry?

A. Dmitri Mendeleev

B. Alfred Werner

C. Linus Pauling

D. Gilbert Lewis

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Correct Answer: Option B

Explanation:
Alfred Werner proposed the coordination theory of complex inorganic compounds, winning the 1913 Nobel Prize in Chemistry.

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Question #3

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The first accurate measurement of the speed of light using astronomical observations of Jupiter's moons was performed by whom?

A. Armand Fizeau

B. Ole Rømer

C. Léon Foucault

D. Albert Michelson

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Correct Answer: Option B

Explanation:
Danish astronomer Ole Rømer made the first quantitative measurement of the speed of light in 1676.

This question belongs to: Static General Knowledge Inventions and Discoveries

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