Answer : (2) - New Alluvial Soil - Also known as the Khadar soil, it has been formed by the deposition of the new Alluvial Soil and is found in the low land.
It becomes fertile by the flood water which reaches the region every year.
Eastern Uttar Pradesh, Bihar, and West Bengal consist of mostly the Khadar soil.
Bhangar soil is made up of old Alluvial Soil and is found in the region between two rivers (Doab). Example - Ganga- Yamuna Doab.