Pick out the wrong statement?

A. Gypsum (CaSO4. 2H2O) is obtained as a by-product in the wet process for manufacture of

B. Phosphate rock when reacted with dilute H2SO4 produces superphosphate

C. Dehydration of ammonium carbamate to produce urea is endothermic

D. Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable

E. ho-phosphoric acid

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