Who discovered the law of conservation of mass in chemical reactions? MCQ with Answer and Explanation

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Who discovered the law of conservation of mass in chemical reactions?

A. John Dalton

B. Joseph Priestley

C. Antoine Lavoisier

D. Robert Boyle

Answer: Option C

Solution (By JKSSB Mock Tests)

Antoine Lavoisier formulated the Law of Conservation of Mass in 1789, proving that mass is neither created nor destroyed in chemical transformations.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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The invention of the common electronic storage method known as the floppy disk was developed by which company?

A. Sony

B. Apple

C. IBM engineering team led by Alan Shugart

D. Xerox

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Correct Answer: Option C

Explanation:
IBM introduced the 8-inch magnetic coated flexible disk system in 1971 to load microcode patches into mainframes.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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The invention of the common electronic computational methodology known as microprogramming was proposed by whom?

A. Maurice Wilkes

B. John von Neumann

C. Alan Turing

D. Charles Babbage

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Correct Answer: Option A

Explanation:
Wilkes formulated microprogramming in 1951 to simplify computer central processing unit development matrix layers.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

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

A. Tu Youyou

B. Charles Laveran

C. Satoshi Ōmura

D. Ronald Ross

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Correct Answer: Option A

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

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