Question

Consider the following statements and state what is not true of the Alluvial Soils?

(a) Alluvial soils are the most widely spread soils.

(b) Alluvial soils as a whole are very fertile.

(c) On the basis of their age they are classified into two - old: Bangar and new: khadar.

(d) Khadar soils are more fertile than Bangar

(e) Alluvial soils contain an adequate proportion of potash, phosphoric acid and lime

(f) Alluvial soils are ideal for sugarcane, paddy, wheat and pulses. 

1. (c)
2. (d)
3. (e)
4. None
5.

Answer 1

Correct Answer - Option 4 : None

The correct answer is None

•  Alluvial soils: 
  • Alluvial soils are widespread soils in India mostly in Northern Plains and River valleys.
  • These soils cover 40% of the total area of the country. Hence statement a is correct
  • These soils are depositional soils transported and deposited by rivers and streams.
  • Alluvial soils are categorised as Khadar and Bangar based on deposition. Hence statement c is correct.
  • Khadar - New alluvium, deposited by floods annually. 
  • Bangar- old alluvium, deposited away from flood plains.
  • Both Khadar and Bangar contain Calcerous concentration (kankars).
  • Khadar soil is more fertile than Bangar. Hence option d is correct.
  • Alluvial soils are fertile soils. Their nature various from sandy, loam to clay. Hence statement b is correct.
  • Alluvial soils contain an adequate amount of Potash, phosphoric acid and lime. Hence statement e is correct.
  • These soils are intensively cultivated. They are suitable for the cultivation of Sugarcane, paddy, wheat and pulses. Hence statement f is correct.
  • Alluvial soil colour varies from light grey to ash grey.