Which planetary boundary layer is directly influenced by Earth's surface? MCQ with Answer and Explanation

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Which planetary boundary layer is directly influenced by Earth's surface?

A. Troposphere

B. Stratosphere

C. Mesosphere

D. Thermosphere

Answer: Option A

Solution (By JKSSB Mock Tests)

The troposphere is directly affected by surface heating, friction, and moisture.

This question belongs to: Geography GK Physical Geography

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Question #1

Climate differs from weather because climate refers to:

A. Long-term average weather conditions

B. Short-term conditions

C. Daily atmospheric conditions

D. Ocean conditions

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Correct Answer: Option A

Explanation:
Climate is the long-term average of weather conditions in a region, usually calculated over 30 years or more.

This question belongs to: Geography GK Physical Geography

Question #2

The Ring of Fire accounts for approximately what percentage of the world's active volcanoes?

A. 60%

B. 90%

C. 75%

D. 50%

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Correct Answer: Option C

Explanation:
Around 75% of the world's active volcanoes are located in the Pacific Ring of Fire.

This question belongs to: Geography GK Physical Geography

Question #3

The world's largest bay is:

A. Gulf of Mexico

B. Bay of Biscay

C. Bay of Bengal

D. Hudson Bay

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Correct Answer: Option C

Explanation:
The Bay of Bengal is the largest bay in the world, located in the northeastern part of the Indian Ocean.

This question belongs to: Geography GK Physical Geography

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