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UPSC Prelims 2025 Paper-I 📅 25 May, 2025

Consider the following statements:
I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth surface.
II. Heat absorbed and trapped by the atmosphere maintains our planet average temperature.
III. Atmosphere gases, like carbon dioxide, are particularly good at absorbing and trapping radiation.

Which of the statements given above are correct?

A
I and III only
B
I and II only
C
I, II and III
D
II and III only
Result Summary
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APEDIA

UPSC Prelims
2025 • 25 May, 2025 • Paper-I
Consider the following statements:
I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth surface.
II. Heat absorbed and trapped by the atmosphere maintains our planet average temperature.
III. Atmosphere gases, like carbon dioxide, are particularly good at absorbing and trapping radiation.

Which of the statements given above are correct?
Correct Answer
I, II and III
All three statements are correct. Without the natural greenhouse effect provided by gases like carbon dioxide in the atmosphere, the Earth average temperature w......
💡 Analysis & Explanation
Introduction
All three statements are correct. Without the natural greenhouse effect provided by gases like carbon dioxide in the atmosphere, the Earth average temperature would be roughly -18 degrees Celsius, which is well below the freezing point of water.