The invention of the first functional synthetic dye, Mauveine, was an accidental discovery by which young chemist? MCQ with Answer and Explanation

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The invention of the first functional synthetic dye, Mauveine, was an accidental discovery by which young chemist?

A. William Henry Perkin

B. Antoine Lavoisier

C. Fritz Haber

D. August Wilhelm von Hofmann

Answer: Option A

Solution (By JKSSB Mock Tests)

Perkin accidentally synthesized aniline purple dye in 1856 while attempting to manufacture artificial anti-malarial quinine out of coal tar.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that absolute thermodynamic entropy reaches zero for pure crystalline elements at absolute zero temperature?

A. James Joule

B. Lord Kelvin

C. Max Planck

D. Walther Nernst

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Correct Answer: Option D

Explanation:
Walther Nernst formulated the Third Law of Thermodynamics, which earned him the 1920 Nobel Prize in Chemistry.

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Question #2

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The first practical monochrome computer mouse was invented by whom at the Stanford Research Institute?

A. Douglas Engelbart

B. Steve Jobs

C. Bill Gates

D. Alan Turing

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Correct Answer: Option A

Explanation:
Douglas Engelbart invented the computer mouse in 1964, constructed out of a wooden shell with two metallic wheels.

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Question #3

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Who discovered the biological mechanism of cloning in mammals, producing 'Dolly the Sheep' in 1996?

A. James Watson

B. Francis Crick

C. Ian Wilmut and Keith Campbell

D. Robert Edwards

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Correct Answer: Option C

Explanation:
Wilmut and Campbell successfully cloned an adult somatic cell using nuclear transfer methods at the Roslin Institute.

This question belongs to: Static General Knowledge Inventions and Discoveries

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