Which soil horizon is the parent rock layer? MCQ with Answer and Explanation

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Which soil horizon is the parent rock layer?

A. A-horizon

B. C-horizon

C. O-horizon

D. B-horizon

Answer: Option B

Solution (By JKSSB Mock Tests)

C-horizon consists of weathered parent material beneath the soil layers.

This question belongs to: Geography GK Soils of India

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Question #1

Which soil is formed mainly due to river deposition in India?

A. Black soil

B. Alluvial soil

C. Laterite soil

D. Desert soil

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Correct Answer: Option B

Explanation:
Alluvial soil is formed by deposition of sediments carried by rivers like Ganga, Brahmaputra, and their tributaries.

This question belongs to: Geography GK Soils of India

Question #2

Which soil type is generally acidic due to heavy rainfall and leaching?

A. Laterite Soil

B. Black Soil

C. Desert Soil

D. Alluvial Soil

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Correct Answer: Option A

Explanation:
Heavy rainfall removes bases from laterite soils, making them acidic.

This question belongs to: Geography GK Soils of India

Question #3

Which soil is generally deficient in nitrogen and humus?

A. Alluvial Soil

B. Mountain Soil

C. Red Soil

D. Black Soil

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Correct Answer: Option C

Explanation:
Red soil is generally poor in nitrogen, phosphorus, and humus but rich in iron compounds.

This question belongs to: Geography GK Soils of India

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