Which soil is older alluvium? MCQ with Answer and Explanation

Which soil is older alluvium?

A. Red soil

B. Black soil

C. Khadar

D. Bhangar

Answer: Option D

Bhangar is older alluvium and contains kankar nodules.

This question belongs to: Geography GK Soils of India

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Question #1 Report Error

Which soil type has the greatest capacity to absorb and hold water?

A. Gravel Soil

B. Sandy Soil

C. Clay Soil

D. Rocky Soil

Correct Answer: Option C

Explanation:
Clay soils have fine particles and a large surface area, enabling high water retention.

This question belongs to: Geography GK Soils of India

Question #2 Report Error

Soil salinity is a major problem in:

A. Glaciers

B. Irrigated dry regions

C. Mountain peaks

D. Dense forests only

Correct Answer: Option B

Explanation:
Excessive irrigation and poor drainage can lead to salt accumulation in soils.

This question belongs to: Geography GK Soils of India

Question #3 Report Error

Which bacteria are associated with nitrogen fixation in leguminous crops?

A. Rhizobium

B. E.coli

C. Lactobacillus

D. Azotobacter only

Correct Answer: Option A

Explanation:
Rhizobium bacteria live in root nodules and convert atmospheric nitrogen into usable forms.

This question belongs to: Geography GK Soils of India