What is the main source of energy in the Sun? MCQ with Answer and Explanation

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What is the main source of energy in the Sun?

A. Nuclear fusion

B. Chemical reaction

C. Nuclear fission

D. Geothermal

Answer: Option A

Solution (By JKSSB Mock Tests)

Nuclear fusion powers the Sun.

This question belongs to: Static General Knowledge Science and Technology

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Question #1

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What is the use of '3D Printing' in space technology?

A. Launching rockets

B. Manufacturing parts in space

C. Navigation

D. Communication

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Correct Answer: Option B

Explanation:
It enables on-demand manufacturing in space.

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Question #2

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Which Indian scientist is known for the development of the smallpox vaccine?

A. Dr. Hargobind Khorana

B. Dr. Edward Jenner

C. None, it was discovered earlier

D. Dr. Y. Subba Row

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Correct Answer: Option C

Explanation:
Edward Jenner developed the smallpox vaccine; Indian contributions are notable in other vaccines.

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Question #3

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India's Mars mission made it the first country in Asia to reach Mars orbit in:

A. Fourth attempt

B. Third attempt

C. First attempt

D. Second attempt

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Correct Answer: Option C

Explanation:
Mangalyaan succeeded in the first attempt.

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