Which soil horizon contains the maximum biological activity? MCQ with Answer and Explanation

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Which soil horizon contains the maximum biological activity?

A. R Horizon

B. B Horizon

C. C Horizon

D. A Horizon

Answer: Option D

Solution (By JKSSB Mock Tests)

The A Horizon or topsoil contains humus and supports maximum microbial and biological activity.

This question belongs to: Geography GK Soils of India

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Question #1

Which soil type in India is particularly rich in titanium and iron compounds?

A. Black Soil

B. Peaty Soil

C. Desert Soil

D. Alluvial Soil

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Correct Answer: Option A

Explanation:
Black soil contains compounds of iron and titanium derived from basaltic parent rocks, contributing to its dark color.

This question belongs to: Geography GK Soils of India

Question #2

Desert soil is also known as:

A. Laterite soil

B. Arid soil

C. Regur soil

D. Forest soil

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Correct Answer: Option B

Explanation:
Desert soils are also called arid soils due to their occurrence in dry regions like Rajasthan.

This question belongs to: Geography GK Soils of India

Question #3

Which soil is known for cracking during dry season?

A. Black soil

B. Alluvial soil

C. Red soil

D. Laterite soil

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Correct Answer: Option A

Explanation:
Black soil develops cracks when dry due to shrinkage.

This question belongs to: Geography GK Soils of India

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