Who invented the acoustic phonograph, capturing audio playback on tin foil cylinders? MCQ with Answer and Explanation

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Who invented the acoustic phonograph, capturing audio playback on tin foil cylinders?

A. Alexander Graham Bell

B. Emile Berliner

C. Nikola Tesla

D. Thomas Edison

Answer: Option D

Solution (By JKSSB Mock Tests)

Thomas Alva Edison invented the phonograph in 1877, capturing acoustic sound waves mechanically via steel needles onto soft foils.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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The chemical element Fluorine was first isolated after many hazardous attempts by which French chemist?

A. Joseph Louis Gay-Lussac

B. Marie Curie

C. Henri Moissan

D. Antoine Lavoisier

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Correct Answer: Option C

Explanation:
Henri Moissan successfully isolated the highly reactive element fluorine in 1886 using electrolysis, winning the 1906 Nobel Prize in Chemistry.

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Question #2

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The invention of the machine gun is historically associated with which American inventor?

A. Richard Gatling

B. John Browning

C. Oliver Winchester

D. Samuel Colt

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Correct Answer: Option A

Explanation:
Richard Gatling invented the Gatling gun, the first highly successful rapid-fire multi-barrel machine gun, during the American Civil War.

This question belongs to: Static General Knowledge Inventions and Discoveries