The P Block Elements - Result Question 14
####14. 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
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Solution:
- (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.