1.

Regular use of which of the following fertilizer increases the acidity of soil

Answer»

POTASSIUM nitrate
Urea
Superphosphate of lime
Ammonium sulphate

Solution :`(NH_(4))_(2)SO_(4)` is a salt of strong acid and weak base, on hydrolysis it will PRODUCE `H^(+)` ION. This will increases the acidity of soil.
`(NH_(4))_(2) SO_(4) to 2NH_(4)^(+) + SO_(4)^(2-)`
`NH_(4)^(+) +H_(2) hArr NH_(4)OH +H^(+)`


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