Chemical Engineering > GATE 2010 > Fertilizer Industry
For making superphosphate by acidulation of phosphate rock, use of nitric acid is desirable, because
A
nitric acid is less expensive than sulphuric acid
B
the availability of nitrogen enhances the value of the superphosphate as a fertilizer
C
the process produces non-hygroscopic superphospate
D
the process produces superphosphate having higher phosphorus content than the sulphuric acid process

Correct : b

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