E-PolyLearning

56. Reaction of anhydrous liquid ammonia with orthophosphoric acid produces
a. ammonium phosphate
b. superphosphate
c. triple superphosphate
d. none of these
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Answer: (a).ammonium phosphate

57. Electric furnace method for production of phosphorous uses phosphate rock
a. and phosphoric acid
b. and coke
c. and sulphuric acid
d. silica and coke
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Answer: (d).silica and coke

58. Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by
a. steam reforming of naphtha and cracking of natural gas.
b. electrolysis of water.
c. cryogenic separation of hydrogen from coke oven gas.
d. all (a), (b) and (c)
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Answer: (d).all (a), (b) and (c)

59. Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ?
a. Urea
b. CAN
c. Ammonium sulphate
d. Superphosphate
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Answer: (c).Ammonium sulphate

60. Ammonium phosphate is a __________ fertiliser.
a. nitrogenous
b. phosphatic
c. complex
d. mixed
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Answer: (d).mixed