Question

The soil forms due to hydration is_ _ _ _ _ _ _ _.
A. Alluvial
B. Yellow
C. Laterite
D. Red

Answer 1

Hint: This soil is formed under forests in humid regions. This soil takes its colour when it gets hydrated.

Complete answer:
Option A) Alluvial – This is not the correct answer because Soils that are formed by surface water are alluvial. Along rivers, in floodplains and deltas, stream terraces, and areas called alluvial fans, you'll find them. This last category is triggered by larger floods, causing the soil to spread out in a triangle fan shape. It is light and porous and can therefore be tilted quickly.

Option B) Yellow - This is the correct answer because this soil is formed under broad-leaved forests in humid subtropical regions, chiefly on parent material from clayey shales. It has an acid reaction and a low humus content, and the presence of ferric hydroxide causes its yellow hue. The overall thickness of the horizon of the field is 30-70 cm. When it is hydrated, the soil takes on a yellow color. In the Western Ghats, Odisha and Chattisgarh, these soils are usually found.

Option C) Laterite - This is not the correct answer because Laterite soil is mainly derived from the debris brought down from the Himalayas or the silt left out by the retreating sea. Thus, they are azonal soils.

Option D) Red - This is not the correct answer because Red soil develops in a temperate, warm, moist climate under deciduous or mixed forest, with thin organic and organic-mineral layers. Red soils are generally derived from crystalline rock.

Therefore the answer is B.

Note:
This soil is found in parts of Odisha, Chhattisgarh, southern parts of the middle Ganga plain and along the piedmont zone of the Western Ghats.