Which is the longest river in Asia? MCQ with Answer and Explanation

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Which is the longest river in Asia?

A. Yangtze

B. Ganga

C. Ob

D. Mekong

Answer: Option A

Solution (By JKSSB Mock Tests)

The Yangtze River is the longest river in Asia.

This question belongs to: Geography GK Physical Geography

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Question #1

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Which mineral is used extensively in the manufacture of plaster of Paris?

A. Feldspar

B. Gypsum

C. Quartz

D. Mica

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Correct Answer: Option B

Explanation:
Gypsum is heated to produce plaster of Paris, which is widely used in construction and medicine.

This question belongs to: Geography GK Physical Geography

Question #2

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Which seismic discontinuity marks the boundary where P-wave velocity suddenly decreases before increasing again due to partial melting?

A. Low Velocity Zone

B. Gutenberg Discontinuity

C. Lehmann Discontinuity

D. Conrad Discontinuity

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Correct Answer: Option A

Explanation:
The Low Velocity Zone (LVZ) occurs in the upper asthenosphere where partially molten materials reduce seismic wave velocity.

This question belongs to: Geography GK Physical Geography

Question #3

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Coral reefs grow best in:

A. Polar Regions

B. Warm Shallow Water

C. Cold Deep Water

D. Freshwater Lakes

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Correct Answer: Option B

Explanation:
Corals require warm, clear, shallow, and sunlit seawater to thrive.

This question belongs to: Geography GK Physical Geography

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