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. Thomas Edison

B. Alexander Graham Bell

C. Emile Berliner

D. Nikola Tesla

Answer: Option A

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 invention of the common chemical matchstick containing safer amorphous red phosphorus instead of toxic white phosphorus is called what?

A. Lucifer Match

B. Friction Match

C. Congreve Match

D. Safety Match

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Correct Answer: Option D

Explanation:
John Edvard Lundström developed the commercial safety match in Sweden by putting red phosphorus on the striking strip rather than the match head.

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. Charles Babbage

C. Alan Turing

D. John von Neumann

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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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The invention of the common computing tracking protocol known as the Ethernet local network architecture was co-developed by whom?

A. Robert Metcalfe

B. Tim Berners-Lee

C. Douglas Engelbart

D. Vint Cerf

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Correct Answer: Option A

Explanation:
Robert Metcalfe co-invented Ethernet at Xerox PARC in 1973, linking internal computer terminals across localized hardware networks.

This question belongs to: Static General Knowledge Inventions and Discoveries

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