Who discovered Nitrogen element in 1772? MCQ with Answer and Explanation

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Who discovered Nitrogen element in 1772?

A. Carl Wilhelm Scheele

B. Daniel Rutherford

C. Joseph Priestley

D. Henry Cavendish

Answer: Option B

Solution (By JKSSB Mock Tests)

Scottish physician Daniel Rutherford isolated nitrogen in 1772, calling it 'noxious air'.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered the therapeutic potential of the anti-malarial drug Artemisinin, winning a Nobel Prize in 2015?

A. Satoshi Ōmura

B. Tu Youyou

C. Ronald Ross

D. Charles Laveran

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Correct Answer: Option B

Explanation:
Tu Youyou extracted artemisinin from sweet wormwood plants based on traditional Chinese medical texts, saving millions from malaria.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered the enzyme Lysozyme and later discovered penicillin?

A. Louis Pasteur

B. Alexander Fleming

C. Edward Jenner

D. Howard Florey

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Correct Answer: Option B

Explanation:
Sir Alexander Fleming discovered lysozyme (an antimicrobial enzyme found in tears and saliva) in 1921 before discovering penicillin in 1928.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

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Who discovered the exact value of the charge of an electron through the famous Oil-Drop Experiment?

A. Ernest Rutherford

B. Max Planck

C. J.J. Thomson

D. Robert Millikan

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Correct Answer: Option D

Explanation:
Robert A. Millikan measured the elementary electric charge of electrons using balanced oil droplets in 1909.

This question belongs to: Static General Knowledge Inventions and Discoveries

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