Q478
Match the following columns: Column I Column II a. Composition of true soil 1. Sticky soil formation b. Origin of inorganic particle 2. Steeper Slope c. Large quantities of Soil colloids 3. Mineral and organic particles d. Formation of thinner soil 4. Weathering of rocks
Match the following columns:
| Column I | Column II |
| a. Composition of true soil | 1. Sticky soil formation |
| b. Origin of inorganic particle | 2. Steeper Slope |
| c. Large quantities of Soil colloids | 3. Mineral and organic particles |
| d. Formation of thinner soil | 4. Weathering of rocks |
A.
a-3, b-4, c-1, d-2
AnswerB.
a-3, b-4, c-2, d-1
C.
a-1, b-2, c-3, d-4
D.
a-4, b-3, c-2, d-1
Answer: Option A
Solution
Answer: Option A
Solution:
True soil is composed of mineral and organic particles in adequate proportions for the growth and development of plants.The inorganic particles present in the soil originated from the process of weathering of rocks, i.e. continuous degradation of the rocks.
Large quantities of soil colloids are the finer size fractions of the soil i.e. clay and organic matter that makes the soil sticky.
The formation of the thinner soil leads to a steeper slope because the soil tends to be washed down the slopes by the rain from the slopes.