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.Management Sciences
Category: Fertilizer Technology
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of ____________ this is normally not done?
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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
_____________ is not a fertiliser?
A. Calcium ammonium nitrate
B. Ferrous sulphate
C. Liquid ammonia
D. Ammonium sulphate
Raw materials for nitric acid manufacture are___________________?
A. Hydrogen peroxide, air and water
B. Anhydrous ammonia and air
C. Anhydrous ammonia, air and water
D. Wet ammonia, air and water
Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an _______________________ reaction?
A. Catalytic
B. Endothermic
C. Exothermic
D. Autocatalytic
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