Which scientist is associated with the discovery of electron? MCQ with Answer and Explanation

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Which scientist is associated with the discovery of electron?

A. Ernest Rutherford

B. Niels Bohr

C. J.J. Thomson

D. James Chadwick

Answer: Option C

Solution (By JKSSB Mock Tests)

J.J. Thomson discovered the electron.

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Question #1

What is the main chemical component of vinegar?

A. Acetic acid

B. Lactic acid

C. Citric acid

D. Formic acid

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Correct Answer: Option A

Explanation:
Vinegar consists mainly of acetic acid (typically 5-8% by volume).

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Question #2

Chandrayaan-3 mission of ISRO achieved soft landing on which part of the Moon?

A. Far Side

B. Equator

C. North Pole

D. South Pole

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Correct Answer: Option D

Explanation:
Chandrayaan-3 made India the first country to soft-land near the lunar South Pole in 2023.

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Question #3

Which metal is the best conductor of electricity?

A. Silver

B. Gold

C. Copper

D. Aluminum

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Correct Answer: Option A

Explanation:
Silver is the most electrically conductive element, although copper is often used due to cost.

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