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.Management Sciences
Category: Fertilizer Technology
Action of phosphoric acid on rock phosphate produces_________________?
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A. Superphosphate
B. Triple superphosphate
C. Nitrophosphate
D. Diammonium phosphate
Which of the following gasifiers can be attached to coal based fertiliser plants ?
A. Lurgi (high pressure) gasifier
B. Kopper-Totzek gasifier
C. Gasifier working at 20 atm
D. Gasifier working at 40 atm
The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is _____________ fertiliser?
A. Nitrogenous
B. Phosphatic
C. Potassic
D. None of these
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of ____________ this is normally not done?
A. Increased biuret formation
B. High corrosion rate
C. Increased cost of equipment
D. All A., B. & C.
Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas ?
A. Water
B. Naphtha
C. Tar
D. Coal/coke oven gas
Which is the best fertiliser for paddy ?
A. Ammonium sulphate
B. Nitro-phosphate
C. Superphosphate
D. Potassium nitrate
Reaction of Cresylic acid with _____________ produces Tricresyl phosphate?
A. Phosphorous pentoxide
B. Phosphorous oxychloride
C. Ammonium phosphate
D. Calcium phosphate
_____________ is the undesirable by-product produced in the manufacture of urea ?
A. Ammonium carbonate
B. Biuret
C. Carbon dioxide
D. Ammonium carbamate
A fertiliser contains 82% N2. It could be_____________________?
A. Urea
B. Liquid NH3
C. Ammonium nitrate
D. None of these
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