Which atmospheric gas is most important for respiration? MCQ with Answer and Explanation

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Which atmospheric gas is most important for respiration?

A. Carbon Dioxide

B. Oxygen

C. Nitrogen

D. Neon

Answer: Option B

Solution (By JKExamLibrary)

Oxygen is essential for respiration in humans and most living organisms.

This question belongs to: Geography GK Physical Geography

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Practice More Physical Geography Questions

Question #1

The Hawaiian Islands are primarily of ______ origin.

A. Glacial

B. Fluvial

C. Aeolian

D. Volcanic

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Correct Answer: Option D

Explanation:
The Hawaiian Islands were formed by volcanic activity over a hotspot beneath the Pacific Plate.

This question belongs to: Geography GK Physical Geography

Question #2

Which desert is known as the 'Cold Desert'?

A. Kalahari

B. Sahara

C. Thar

D. Gobi

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Correct Answer: Option D

Explanation:
The Gobi Desert experiences extremely cold winters and is classified as a cold desert.

This question belongs to: Geography GK Physical Geography

Question #3

Which ocean current is known as a warm current?

A. Labrador Current

B. Gulf Stream

C. Canary Current

D. Peru Current

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Correct Answer: Option B

Explanation:
The Gulf Stream is a warm ocean current that flows from the Gulf of Mexico toward Europe.

This question belongs to: Geography GK Physical Geography

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