The P Block Elements Ques 6

6. Repeated use of which one of the following fertilizers would increase the acidity of the soil?

[1998]

(a) Urea

(b) Superphosphate of lime

(c) Ammonium sulphate

(d) Potassium nitrate

Show Answer

Solution:

  1. (c) Ammonium sulphate is a salt of weak base and strong acid, so it produces acidity. Hence aqueous solution of ammonium sulphate increases the acidity of soil.