A caldera is formed when: MCQ with Answer and Explanation

A caldera is formed when:

A. A volcano collapses after eruption

B. Wind erosion occurs

C. A glacier melts

D. A river changes course

Answer: Option A

A caldera is a large depression formed when a volcano collapses after a major eruption.

This question belongs to: Geography GK Physical Geography

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Question #1 Report Error

The Köppen climate symbol 'BW' denotes:

A. Tundra Climate

B. Desert Climate

C. Mediterranean Climate

D. Monsoon Climate

Correct Answer: Option B

Explanation:
BW in Köppen classification represents arid desert climates.

This question belongs to: Geography GK Physical Geography

Question #2 Report Error

The standard time of India is based on:

A. 90° E Longitude

B. 70° E Longitude

C. 82.5° E Longitude

D. 75° E Longitude

Correct Answer: Option C

Explanation:
Indian Standard Time (IST) is based on 82.5° East longitude, passing near Mirzapur, Uttar Pradesh.

This question belongs to: Geography GK Physical Geography

Question #3 Report Error

Barchans are:

A. Crescent-shaped Sand Dunes

B. Volcanic Cones

C. Coral Reefs

D. Glacial Deposits

Correct Answer: Option A

Explanation:
Barchans are crescent-shaped sand dunes formed by unidirectional winds.

This question belongs to: Geography GK Physical Geography