Multiple choice

Which of the following fertilisers is used to increase the acidity of soil?

  1. Potassium nitrate

  2. Urea

  3. Superphosphate of lime

  4. Ammonium sulphate

  5. None of these

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

Ammonium ion (NH4)+ is acidic in nature.