Humus is formed by: MCQ with Answer and Explanation

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Humus is formed by:

A. Rock weathering

B. Volcanic activity

C. River deposition

D. Decomposition of organic matter

Answer: Option D

Solution (By JKSSB Mock Tests)

Humus is the dark organic component formed from decomposed plant and animal remains.

This question belongs to: Geography GK Soils of India

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Question #1

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Which process is responsible for the concentration of iron oxides in laterite soils?

A. Calcification

B. Leaching

C. Salinization

D. Humification

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Correct Answer: Option B

Explanation:
Leaching removes soluble materials, leaving iron and aluminum oxides concentrated.

This question belongs to: Geography GK Soils of India

Question #2

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Which soil is ideal for groundnut cultivation?

A. Laterite soil

B. Desert soil

C. Black soil

D. Red soil

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Correct Answer: Option D

Explanation:
Red soil supports groundnut cultivation in peninsular India.

This question belongs to: Geography GK Soils of India

Question #3

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The soil found in coastal Odisha and West Bengal is often affected by:

A. Salinity

B. Glaciation

C. Volcanism

D. Earthquakes

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Correct Answer: Option A

Explanation:
Coastal soils often become saline due to seawater intrusion and evaporation.

This question belongs to: Geography GK Soils of India

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