Who discovered the law of buoyant force acting on a submerged object? MCQ with Answer and Explanation

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Who discovered the law of buoyant force acting on a submerged object?

A. Blaise Pascal

B. Isaac Newton

C. Daniel Bernoulli

D. Archimedes

Answer: Option D

Solution (By JKSSB Mock Tests)

Archimedes of Syracuse formulated the principle of buoyancy, known as Archimedes' Principle.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The first practical steam-powered water pump, known as the 'Miner's Friend', was invented by whom in 1698?

A. Thomas Savery

B. Thomas Newcomen

C. Richard Trevithick

D. James Watt

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Correct Answer: Option A

Explanation:
Thomas Savery patented the first commercial steam-driven machine to pump water out of flooded mines.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered that biological chromosomes carry the unique hereditary factor tracking layouts, establishing Chromosome Theory?

A. Gregor Mendel

B. Thomas Hunt Morgan

C. James Watson

D. Walter Sutton and Theodor Boveri

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Correct Answer: Option D

Explanation:
Sutton and Boveri independently identified in 1902 that chromosome pairing and separation match Mendelian inheritance laws.

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Question #3

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The first modern steam locomotive, 'Rocket', was built by which engineer?

A. James Watt

B. George Stephenson

C. Richard Trevithick

D. Thomas Newcomen

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Correct Answer: Option B

Explanation:
George Stephenson and his son Robert built the 'Rocket' in 1829, setting the standard for future steam railways.

This question belongs to: Static General Knowledge Inventions and Discoveries

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