Who discovered that the velocity of sound in a gas depends directly on the ratio of specific heats? MCQ with Answer and Explanation

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Who discovered that the velocity of sound in a gas depends directly on the ratio of specific heats?

A. Christiaan Huygens

B. Isaac Newton

C. Robert Boyle

D. Pierre-Simon Laplace

Answer: Option D

Solution (By JKSSB Mock Tests)

Laplace corrected Newton's isothermal calculation of sound speed by incorporating adiabatic heating/cooling factors.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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

A. Giulio Bizzozero

B. Karl Landsteiner

C. William Harvey

D. Marcello Malpighi

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Correct Answer: Option A

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

Question #2

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The term 'vitamin' was coined by which biochemist in 1912?

A. Frederick Hopkins

B. Louis Pasteur

C. Casimir Funk

D. Robert Koch

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Correct Answer: Option C

Explanation:
Polish biochemist Casimir Funk coined the term 'vitamine' (later shortened to vitamin) to describe vital amine nutrients.

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Question #3

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The invention of the safety razor with disposable stamped steel blades was introduced by whom?

A. Walter Hunt

B. John Loud

C. King Camp Gillette

D. Elisha Otis

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Correct Answer: Option C

Explanation:
King Camp Gillette patented the safety razor system with cheap, replaceable double-edged blades in 1904.

This question belongs to: Static General Knowledge Inventions and Discoveries

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