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

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

A. Richard Gatling

B. John Browning

C. Samuel Colt

D. Oliver Winchester

Answer: Option A

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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Question #1 Report Error

Who invented the first practical electronic pocket calculator, introduced commercially in 1970?

A. Sanyo and Texas Instruments teams

B. Alan Turing

C. Douglas Engelbart

D. Charles Babbage

Correct Answer: Option A

Explanation:
Sanyo's ICC-0081 and Texas Instruments' 'Cal-Tech' project initiated the mass scaling of hand-held microelectronic computation.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

The expanding nature of the universe was discovered by which astronomer?

A. Johannes Kepler

B. Galileo Galilei

C. Albert Einstein

D. Edwin Hubble

Correct Answer: Option D

Explanation:
Edwin Hubble discovered in 1929 that galaxies are moving away from each other, indicating that the universe is expanding.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

Who discovered the exact relationship between mechanical work done and heat generated, leading to the SI unit of energy?

A. James Watt

B. James Prescott Joule

C. Rudolf Clausius

D. Lord Kelvin

Correct Answer: Option B

Explanation:
James Prescott Joule established the mechanical equivalent of heat through rigorous thermodynamic experiments.

This question belongs to: Static General Knowledge Inventions and Discoveries