Question

In the upper and Middle Ganga plain, two different types of alluvial soils have developed, viz, Khadar and
Bhangar. Consider the following statements about thesesoil types and choose the correct ones.
1. Khadar is the new alluvium while Bhangar represents a system of older alluvium.
2. Khadar soil contains calcareous concretions while Bhangar soilcompletely lacks it.
3. The sand content in these soil decreases from west to east.
A) 1, 2 and 3
B) I and 2
C) 2 and 3
D)1 and 3
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Answer 1

Answer:

b

I don't know the full amswer I have read

Answer 2

Answer:

d) 1 and 3

Explanation:

In the Upper and Middle Ganga plain, there are two different types of alluvial soils  Khadar and Bhangar.

1. Khadar is the new alluvium while Bhangar represents a system of older alluvium. (Statement 1 is correct)

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.

2. Khadar soil contains calcareous concretions while Bhangar soil completely lacks it. (Statement 2 is incorrect, as per the question Statement)

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 Brahmaputra valley.

3. The sand content in these soil decreases from west to east. (Statement 3 is correct)

The sand content decreases from the west to the east.

Hence, option d is correct.

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