Q. Consider the following statements about Alluvial soils:
- Khadar is the new alluvium and is deposited by floods annually.
- Bhangar represents a system of older alluvium, deposited away from the flood plains.
- Only Bhangar soils contain calcareous concretions.
- The sand content decreases from the east to west.
Which of the above is / are correct?
Answer:
Only 1 and 2
Notes: In the Upper and Middle Ganga plain, two different types of alluvial soils have developed, viz. Khadar and Bhangar. Khadar is the new alluvium and is deposited by floods annually, which enriches the soil by depositing fine silts. Bhangar represents a system of older alluvium, deposited away from the flood plains. Both the Khadar and Bhangar soils contain calcareous concretions (Kankars). These soils are more loamy and clayey in the lower and middle Ganga plain and the Brahamaputra valley. The sand content decreases from the west to east.