Fertilizer Technology

Gas based fertiliser plants use_________________? A. Natural gas as a source of hydrogen B. Natural gas as heating medium C. Coal gas as a source of hydrogen D. Coal gas as heating medium

Chemical formula of meta-phosphoric acid is ___________________? A. H3PO4 B. H4P2O7C. HPO3 D. Same as that of Pyrophosphoric acid

Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition _______________? A. Electrolysis of water B. Cryogenic removal of H2 from coke oven gas C. Steam reforming of naphtha D. Natural gas cracking

A nitrogenous fertiliser contains 20% N2. It could be_________________? A. Ammonium nitrateB. Calcium ammonium nitrate (CAN) C. Urea D. Ammonium chloride

Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH3__________________? A. HNO3 & limestone B. CO2 & H2SO4 C. HNO3 & NH4Cl D. CO2 & KNO3

Leaching of phosphate rock by strong ____________ acid produces phosphoric acid ? A. Sulphuric B. HydrochloricC. Either A. or B. D. Neither A. nor B.

Which of the following is not a mixed fertiliser ? A. NitrophosphateB. Calcium ammonium nitrate (CAN) C. Ammonium phosphate D. None of these

Flushing liquor used for cooling coke oven gas constitutes of __________________? A. Ammoniacal liquor B. K2CO3 solution C. Dilute H2SO4 D. Dilute HCl

Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent? A. 5B. 20 C. 50 D. 65

Dehydration of ammonium carbamate to yield urea is a/an __________________ reaction? A. ExothermicB. Endothermic C. Autocatalytic D. Catalytic