Multiple choice

Which of the following statements is not correct regarding the use of fertilisers?

  1. Fertilisers are inorganic salts prepared in factories.

  2. Excessive use of fertilisers makes the soil less fertile.

  3. Fertilisers have become a source of water pollution.

  4. Fertilisers provide a lot of humus to soil.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fertilisers do not provide humus to soil. The rest of the statements are true regarding fertilisers.