Question

Which one of the following is the soil order for old alluvial soils?

• A. Inceptisols
• B. Entisols
• C. Histosols
• D. Molisols

Hint:

Alluvial soils:
- Old alluvium: Inceptisols.
- New alluvium: Entisols.
- Alluvial soils are important for agriculture.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
This question tests knowledge of soil orders for alluvial soils.

Step 2: Detailed Explanation:
Old alluvial soils belong to the soil order Inceptisols (A).
Inceptisols are moderately developed soils with some horizon development.
They are typical of older alluvial deposits (e.g., older alluvium in the Indo-Gangetic plains).
New alluvial soils (younger) belong to the order Entisols.
Other options:
- Entisols (B): Recent alluvial soils (new alluvium).
- Histosols (C): Organic soils (peat).
- Molisols (D): Grassland soils.
Thus, old alluvial soils are Inceptisols.

Step 3: Final Answer:
Thus, the soil order for old alluvial soils is Inceptisols, which corresponds to option (A).
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