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. C-horizon

B. A-horizon

C. B-horizon

D. R-horizon

Answer: Option B

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

Which soil is highly prone to landslides when deforested?

A. Alluvial soil

B. Mountain soil

C. Desert soil

D. Black soil

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Correct Answer: Option B

Explanation:
Mountain soil regions become unstable and prone to landslides after deforestation.

This question belongs to: Geography GK Soils of India

Question #2

Which soil is rich in iron but poor in nitrogen?

A. Desert soil

B. Alluvial soil

C. Red soil

D. Black soil

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Correct Answer: Option C

Explanation:
Red soil is rich in iron oxide but lacks nitrogen and humus.

This question belongs to: Geography GK Soils of India

Question #3

Which soil is most suitable for millet cultivation in arid regions?

A. Laterite soil

B. Desert soil

C. Black soil

D. Alluvial soil

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Correct Answer: Option B

Explanation:
Desert soils support drought-resistant crops like millets.

This question belongs to: Geography GK Soils of India

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