Which of the following is the coldest layer of the atmosphere? MCQ with Answer and Explanation

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Which of the following is the coldest layer of the atmosphere?

A. Troposphere

B. Mesosphere

C. Thermosphere

D. Stratosphere

Answer: Option B

Solution (By JKSSB Mock Tests)

The mesosphere is the coldest layer of the atmosphere, with temperatures dropping to as low as -90°C at the mesopause.

This question belongs to: Geography GK Climate and Weather

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Question #1

What is the name of the phenomenon where the temperature in the thermopause is constant?

A. Greenhouse effect

B. Isothermal layer

C. Adiabatic cooling

D. Temperature inversion

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Correct Answer: Option B

Explanation:
The thermopause is an isothermal layer, meaning the temperature is constant with altitude.

This question belongs to: Geography GK Climate and Weather

Question #2

The Northeast Monsoon winds originate from:

A. Indian Ocean

B. Tibetan Plateau

C. Mediterranean Sea

D. Siberian High

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Correct Answer: Option D

Explanation:
The Northeast Monsoon winds originate from the Siberian High and blow over the Bay of Bengal, picking up moisture and bringing rainfall to southern India.

This question belongs to: Geography GK Climate and Weather

Question #3

Which of the following lakes is a tectonic lake in India?

A. Wular Lake

B. Lonar Lake

C. Sambhar Lake

D. Chilika Lake

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Correct Answer: Option A

Explanation:
Wular Lake was formed by tectonic activity, making it a tectonic lake.

This question belongs to: Geography GK Climate and Weather

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