Question

Why industrial waste contaminates the soil?

• A. They adversely affect the fertility of soil
• B. They change the colour of the soil
• C. They change the pH of the soil
• D. Both A and C

Answer 1

The correct option is D Both A and C

Soil pollution is caused by the addition of substances and factors which decrease its productivity. It is caused by agrochemicals, industrial wastes, municipal wastes etc. It adversely affects the fertility of the soil. The industrial waste lingers in the soil surface for a long time and makes it unsuitable for use by changing the pH of the soil. Pesticides and herbicides are used in agricultural practices and these chemicals penetrate into the soil and change the pH of the soil, affecting its fertility.

Thus, the correct answer is option D.