Multiple choice

Consider the following statements about the soils of India:

  1. High temperature during most of the year retards formation of humus.
  2. Soils which have humus require regular application of chemical fertilizers to remove nitrogen deficiency.
  3. Titanium salts in basalt impart black colour to the soils of the Indian plateau.
  4. Red soils are confined to the peripheral areas of the Indian plateau. Which of the statements given above are correct?

  1. 1 and 2

  2. 1, 3 and 4

  3. 2 and 3

  4. 2 and 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 The decayed leaf material adds much needed humus to soil thereby increasing its fertility. Humus itself decomposes in process known as minerolisation which releases nitrogenous compounds into the soil. So, the soils which have humus should not face nitrogen deficiency.

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