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. Fritz Haber

B. August Wilhelm von Hofmann

C. Antoine Lavoisier

D. William Henry Perkin

Answer: Option D

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 atomic particle configurations include a heavy uncharged component, predicting the Neutron before its physical extraction?

A. Ernest Rutherford

B. J.J. Thomson

C. Niels Bohr

D. James Chadwick

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Correct Answer: Option A

Explanation:
Rutherford postulated the existence of a tightly bound proton-electron neutral pair in 1920, which Chadwick later isolated as the neutron.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered the biological presence of blood platelets and their exact role in physical blood coagulation?

A. Marcello Malpighi

B. Giulio Bizzozero

C. William Harvey

D. Karl Landsteiner

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Correct Answer: Option B

Explanation:
Italian pathologist Bizzozero identified blood platelets ('piastrine') in 1882, describing how they aggregate to plug damaged blood vessels.

This question belongs to: Static General Knowledge Inventions and Discoveries