Who discovered the existence of infrared radiation in sunlight in 1800 using thermometers and a prism? MCQ with Answer and Explanation

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Who discovered the existence of infrared radiation in sunlight in 1800 using thermometers and a prism?

A. Johann Wilhelm Ritter

B. Heinrich Hertz

C. James Clerk Maxwell

D. William Herschel

Answer: Option D

Solution (By JKSSB Mock Tests)

William Herschel discovered infrared light by measuring the temperature rise just beyond the red end of the visible spectrum.

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 manufacturing system known as the Chamber Process optimized production of what?

A. Nitric Acid

B. Sulfuric Acid

C. Bleaching Powder

D. Soda Ash

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Correct Answer: Option B

Explanation:
John Roebuck patented the lead-chamber method in 1746, enabling the mass production of sulfuric acid, a key chemical of the Industrial Revolution.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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The first electronic programmable digital computer, ENIAC, was designed by whom?

A. John von Neumann

B. Charles Babbage

C. John Mauchly and J. Presper Eckert

D. Alan Turing

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Correct Answer: Option C

Explanation:
ENIAC (Electronic Numerical Integrator and Computer) was constructed by Mauchly and Eckert at the University of Pennsylvania in 1945.

This question belongs to: Static General Knowledge Inventions and Discoveries