Who formulated the Laws of Planetary Motion? MCQ with Answer and Explanation

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Who formulated the Laws of Planetary Motion?

A. Galileo Galilei

B. Isaac Newton

C. Johannes Kepler

D. Nicolaus Copernicus

Answer: Option C

Solution (By JKSSB Mock Tests)

Johannes Kepler formulated the three laws of planetary motion in the early 17th century.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that the chemical element Argon exists as an unreactive atmospheric component, launching the noble gas group?

A. Joseph Priestley

B. Henry Cavendish

C. Lord Rayleigh and William Ramsay

D. Daniel Rutherford

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Correct Answer: Option C

Explanation:
Rayleigh and Ramsay isolated argon in 1894 by removing all oxygen, nitrogen, and carbon dioxide from air samples.

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Question #2

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Who discovered the iconic 'Uncertainty Principle' in quantum physics?

A. Niels Bohr

B. Werner Heisenberg

C. Erwin Schrödinger

D. Max Born

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Correct Answer: Option B

Explanation:
Werner Heisenberg formulated the principle stating that the position and momentum of a subatomic particle cannot be measured simultaneously with absolute precision.

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Question #3

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The invention of the high-power chemical explosive TNT (Trinitrotoluene) was originally intended for use as what?

A. Mining agent

B. Disinfectant

C. Yellow dye

D. Rocket fuel

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Correct Answer: Option C

Explanation:
German chemist Julius Wilbrand discovered TNT in 1863 as a textile dye; its explosive potential was not recognized until decades later.

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