An island formed by coral polyps around a lagoon is called: MCQ with Answer and Explanation

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An island formed by coral polyps around a lagoon is called:

A. Estuary

B. Atoll

C. Fjord

D. Delta

Answer: Option B

Solution (By JKSSB Mock Tests)

An atoll is a ring-shaped coral reef surrounding a lagoon.

This question belongs to: Geography GK Physical Geography

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Practice More Physical Geography Questions

Question #1

Which layer of the atmosphere contains the maximum mass of air?

A. Troposphere

B. Thermosphere

C. Mesosphere

D. Stratosphere

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Correct Answer: Option A

Explanation:
About 75% of the atmosphere's mass is concentrated in the troposphere.

This question belongs to: Geography GK Physical Geography

Question #2

Longitude is measured east and west of:

A. Equator

B. Prime Meridian

C. Tropic of Cancer

D. International Date Line

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Correct Answer: Option B

Explanation:
Longitude is measured east and west from the Prime Meridian (0° longitude), which passes through Greenwich, England.

This question belongs to: Geography GK Physical Geography

Question #3

The local wind 'Chinook' is known as:

A. A tropical cyclone

B. A sea breeze

C. A warm, dry downslope wind

D. A cold polar wind

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Correct Answer: Option C

Explanation:
Chinook winds are warm, dry winds descending the eastern slopes of the Rocky Mountains.

This question belongs to: Geography GK Physical Geography

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