A stack is formed when: MCQ with Answer and Explanation

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A stack is formed when:

A. A river deposits sediment

B. A volcano erupts

C. A sea arch collapses

D. A glacier melts

Answer: Option C

Solution (By JKSSB Mock Tests)

When the roof of a sea arch collapses, a detached pillar called a stack remains.

This question belongs to: Geography GK Physical Geography

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Question #1

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Which is the highest active volcano in the world?

A. Mount Etna

B. Krakatoa

C. Fuji

D. Ojos del Salado

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Correct Answer: Option D

Explanation:
Ojos del Salado on the Argentina-Chile border is the highest active volcano in the world.

This question belongs to: Geography GK Physical Geography

Question #2

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Fresh snow has:

A. Medium Albedo

B. Zero Albedo

C. High Albedo

D. Low Albedo

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Correct Answer: Option C

Explanation:
Fresh snow reflects most incoming sunlight and therefore has a very high albedo.

This question belongs to: Geography GK Physical Geography

Question #3

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An oxbow lake is formed by:

A. Glacial Activity

B. Wind Erosion

C. Cut-off Meanders of Rivers

D. Volcanic Activity

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Correct Answer: Option C

Explanation:
An oxbow lake forms when a river meander is cut off from the main channel.

This question belongs to: Geography GK Physical Geography

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