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. A Horizon

B. B Horizon

C. C Horizon

D. R Horizon

Answer: Option A

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 is best for horticulture in hills?

A. Alluvial soil

B. Desert soil

C. Black soil

D. Mountain soil

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Correct Answer: Option D

Explanation:
Mountain soil supports fruits and horticultural crops in hilly areas.

This question belongs to: Geography GK Soils of India

Question #2

Which soil is found in Brahmaputra valley?

A. Alluvial soil

B. Desert soil

C. Black soil

D. Laterite soil

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Correct Answer: Option A

Explanation:
Brahmaputra valley has fertile alluvial soil due to river deposits.

This question belongs to: Geography GK Soils of India

Question #3

Which soil conservation method involves planting rows of trees?

A. Terracing

B. Contour Ploughing

C. Mulching

D. Shelter Belts

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Correct Answer: Option D

Explanation:
Shelter belts reduce wind velocity and protect soil from wind erosion.

This question belongs to: Geography GK Soils of India

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