| Consider the following characteristics of a soil. |
| 1. These soils are formed under conditions of high temperature and heavy rainfall with alternate wet and dry periods. |
| 2. Residual soils formed by leaching in areas of heavy rain. |
| 3. It is of coarse texture, soft and friable. |
| Which of the characteristic (s) given above is/are of laterite soil? |
A) Only 1
B) 1 and 2
C) 2 and 3
D) All of these
Correct Answer: D
Solution :
[d] Laterite = brick (Latin word) These soils are formed under conditions of high I temperature and heavy rainfall with alternate wet and dry periods. Thus, its formation takes place strictly under monsoon conditions. Residual soils formed by leaching in areas of heavy rain. Leaching is a process, in which the nutrients get percolated down below the soil due to heavy rainfall; thus leaving the top soil infertile also called desilication. Laterite soil are found in elevated areas which receive very high rainfall. As a result, top soil gets washed away. This process is called leaching. The soil, therefore, loses its fertility to a great extent. It covers an area of about 2.4 lakh sq km. 43ue to the presence of iron oxide which is formed by leaching. The soluble plant foods like potash are removed from the top soil leaving alumina and iron oxide. It is a porus soil, silica is removed from it by chemical action is poor in lime and magnesium and deficient in nitrogen.
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