The invention of the machine gun is historically associated with which American inventor? MCQ with Answer and Explanation

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

A. Oliver Winchester

B. Richard Gatling

C. Samuel Colt

D. John Browning

Answer: Option B

Solution (By JKSSB Mock Tests)

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

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Who discovered that atomic elements possess unique magnetic configuration properties that line split inside specialized oven beam devices?

A. Niels Bohr

B. Otto Stern and Walther Gerlach

C. Werner Heisenberg

D. Wolfgang Pauli

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Correct Answer: Option B

Explanation:
The Stern-Gerlach experiment in 1922 physically demonstrated spatial quantization and electron spin attributes.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered that light waves shift in frequency relative to the relative motion between the source and observer?

A. Christian Doppler

B. Edwin Hubble

C. Albert Einstein

D. Heinrich Hertz

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Correct Answer: Option A

Explanation:
Christian Doppler proposed the Doppler Effect in 1842, which applies uniformly to both acoustic sound pitch adjustments and optical stellar shifts.

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Question #3

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Who invented the liquid-fueled rocket engine, launching the world's first successful prototype in 1926?

A. Hermann Oberth

B. Konstantin Tsiolkovsky

C. Robert Goddard

D. Wernher von Braun

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Correct Answer: Option C

Explanation:
Robert H. Goddard launched the first liquid-fueled rocket (using gasoline and liquid oxygen) in Auburn, Massachusetts.

This question belongs to: Static General Knowledge Inventions and Discoveries

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