Q. With reference to Arid Soils in India, consider the following statements:
1.Arid soils are generally rich in nitrogen and phosphate content.
2.They are typically sandy and saline, and in some places, common salt is extracted by evaporating saline water.
3.The presence of ‘kankar’ layers in the lower horizons improves water infiltration and groundwater recharge.
Which of the statements given above is/are correct?
Quarterly-SFG-Jan-to-March
Red Book

[A] 1 and 2 only

[B] 2 only

[C] 2 and 3 only

[D] 1 and 3 only

Answer: B
Notes:

Explanation:

  • Arid soils are deficient in nitrogen. Phosphate content is normal, but nitrogen deficiency rules out this statement.
  • The soils are sandy and saline, and in some areas, salt is collected by evaporating saline water.
  • The ‘kankar’ layers restrict water infiltration, not improve it. They act as a barrier, although once irrigation is done, moisture retention improves in the topsoil.

Source:  India Physical Environment


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