The invention of the cotton gin, which automated the extraction of seeds from cotton fiber, is credited to whom? MCQ with Answer and Explanation

Question
The invention of the cotton gin, which automated the extraction of seeds from cotton fiber, is credited to whom?
A. James Hargreaves
B. Richard Arkwright
C. Samuel Crompton
D. Eli Whitney
Answer: Option D
Solution (By JKSSB Mock Tests)
Eli Whitney patented the cotton gin in 1794, revolutionizing the cotton industry in the United States.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who invented the global positioning system (GPS) structural architecture alongside Ivan Getting and Bradford Parkinson?
A. Gladys West
B. Tim Berners-Lee
C. Vint Cerf
D. Alan Turing
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Correct Answer: Option A

Explanation:
Gladys West's mathematical modeling of the Earth's geoid shape was critical to developing the calculations behind accurate GPS tracking.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
The discovery of the mechanism of the greenhouse effect in the atmosphere is first attributed to which scientist?
A. Guy Stewart Callendar
B. Joseph Fourier
C. Svante Arrhenius
D. John Tyndall
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Correct Answer: Option B

Explanation:
Joseph Fourier recognized in 1824 that Earth's atmosphere acts like an insulator, warming the planet's surface.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The fundamental principle of fluid mechanics stating that internal pressure drops as fluid velocity increases was discovered by whom?
A. Daniel Bernoulli
B. Isaac Newton
C. Blaise Pascal
D. Archimedes
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Correct Answer: Option A

Explanation:
Daniel Bernoulli published Bernoulli's Principle in his book 'Hydrodynamica' in 1738.
This question belongs to: Static General Knowledge Inventions and Discoveries
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