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. Chemical reaction

B. Nuclear fusion

C. Geothermal

D. Nuclear fission

Answer: Option B

Solution (By JKSSB Mock Tests)

Nuclear fusion powers the Sun.

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Question #1

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What is the chemical symbol for Potassium?

A. Pt

B. P

C. K

D. Po

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Correct Answer: Option C

Explanation:
The symbol for potassium is K, from the medieval Latin 'kalium'.

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Question #2

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SSLV is developed by ISRO for:

A. Small satellites

B. Heavy satellites

C. Lunar landings

D. Human missions

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Correct Answer: Option A

Explanation:
Small Satellite Launch Vehicle for cost-effective small payloads.

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Question #3

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What is the common name for Sodium Bicarbonate?

A. Bleaching Powder

B. Baking Soda

C. Caustic Soda

D. Washing Soda

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Correct Answer: Option B

Explanation:
Sodium Bicarbonate ($NaHCO_3$) is widely known as baking soda.

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