According to the age of the alluvial soil (Khadar) is old alluvial soil.
Answer:
According to the age of the alluvial soil (Khadar) is new alluvial soil.
Explanation
- Khadar is older alluvial soil which represents the upland alluvial tract .
- The new soil formed due to alluvial deposits along the course of the river .
- The soil is rich in humus and it gives a high yield due to the rich amount of minerals and humus in the soil.