Which gas makes the sky look blue? MCQ with Answer and Explanation

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Which gas makes the sky look blue?

A. Oxygen

B. Carbon Dioxide

C. Nitrogen

D. Argon

Answer: Option C

Solution (By JKSSB Mock Tests)

Rayleigh scattering, where sunlight interacts with molecules (primarily nitrogen), causes the sky to appear blue.

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What is the freezing point of water in Celsius?

A. 0°C

B. 100°C

C. -10°C

D. 32°C

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Correct Answer: Option A

Explanation:
Water freezes at 0 degrees Celsius at atmospheric pressure.

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Explanation:
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