Subject: Soils

In India, the problem of soil erosion is associated with which of the following?
1. Terrace cultivation
2. Deforestation
3. Tropical climate
Select the correct answer using the code given below:

With reference to agricultural soils, consider the following statements :

1.A high content of organic matter in soil drastically reduces its water holding capacity.
2.Soil does not play any role in the sulphur cycle.
3.Irrigation over a period of time can contribute to the salinization of some agricultural lands.
Which of the statements given above is/are correct ?

The black cotton soil of India has been formed due to the weathering of