Question

The new alluvial deposits found in the Gangetic plain are known as:
a)Bhabar
b)Bhangar
c)Khadar
d)Terai

Answer 1

Hint: Alluvial deposits are carried and deposited by the action of rivers. Components of alluvial deposits are silt, sand, clay and gravel. Due to its high porosity, alluvial soil requires least water making it one of the best soil.

Complete answer: Alluvial soil is the most broadly spread and chief soil. Rivers coming from himalayas deposits alluvial soil in the entire northern plains. Alluvial soil can be categorised in two groups on the basis of their age. These comprise; the bangar and the khadar. The bangar is the old alluvial soil whereas the khadar is the new alluvial soil. The particles in khadar are more fine and fertile than bangar. Looking at the options given:
Option A: Bhabhar is the region situated at the junction of Himalayas and the Indo-Gangetic Plain.. This is an incorrect answer.
Option B: Bangar is the old alluvial soil. This is an incorrect answer.
Option C: Khadar is the new alluvial soil. It has more fine and fertile particles. This is the correct answer.
Option D: Terai is a lowland region. It is situated in the region in south of Nepal and north of India that lies between the foothills of himalayas and the plains. This is an incorrect answer.

Option ‘C’ is correct.

Note: Alluvium is free and dispersed sediment or soil which has been eroded, manipulated, reshaped and deposited by the action of water. It is made from substances like debris of silt and clay, and large debris of sand and gravel.