Question

Write T for the true statement and F for the false one. Correct the false statement(s).

1. In physical weathering, the chemical nature of the rock is altered.
2. The difference in particle size of the soil constituents determines its colour.
3. Sandy soil has high porosity, which prevents the retention of water.
4. Lime is added to basic soils to lower the pH.
5. The method of growing crops on steps in hilly region is called plantation farming.

Answer 1

1. F. Physical weathering does not alter the chemical nature of the weathered rocks.
2. F. The difference in particle size determines soil texture.
3. T. Sandy soil is porous and water drains out. Therefore, sandy soil is unable to retain water.
4. F. Lime is added to acidic soils to raise pH to near neutral values.
5. F. The method of growing crops on steps in hilly regions is known as terrace farming.