Which horizon of soil is richest in humus? MCQ with Answer and Explanation

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Which horizon of soil is richest in humus?

A. A-horizon

B. B-horizon

C. C-horizon

D. R-horizon

Answer: Option A

Solution (By JKSSB Mock Tests)

A-horizon (topsoil) contains the highest amount of organic matter and humus, making it the most fertile layer.

This question belongs to: Geography GK Soils of India

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Question #1

The process of accumulation of calcium carbonate in soil is known as:

A. Humification

B. Calcification

C. Podzolization

D. Leaching

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Correct Answer: Option B

Explanation:
Calcification refers to the accumulation of calcium carbonate in soil layers, especially in dry regions.

This question belongs to: Geography GK Soils of India

Question #2

Which crop is best suited to fertile floodplain soils?

A. Sugarcane

B. Rubber

C. Coffee

D. Tea

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Correct Answer: Option A

Explanation:
Floodplain alluvial soils provide excellent conditions for sugarcane cultivation.

This question belongs to: Geography GK Soils of India

Question #3

Which type of erosion occurs when water removes soil uniformly from a large area?

A. Gully Erosion

B. Sheet Erosion

C. Ravine Erosion

D. Wind Erosion

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Correct Answer: Option B

Explanation:
Sheet erosion removes a thin, uniform layer of topsoil over a broad area.

This question belongs to: Geography GK Soils of India

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