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.Management Sciences
Category: Fertilizer Technology
Multistage operation (as in the case of catalytic oxidation of SO2) is not carried out for NH3 synthesis, because of____________________?
A. Comparatively higher pressure drop
B. High cost of the high pressure vessel used for the reactor
C. Higher pumping cost
D. Chances of entrainment and disturbance of catalyst bed
Triple superphosphate is made by reacting phosphate rock with _____________ acid?
A. Phosphoric
B. Nitric
C. Sulphuric
D. Hydrochloric
Commercial fertilisers are available mostly in the form of__________________?
A. Powder
B. Granules
C. Lumps
D. Flakes
The composition of fresh feed to the high temperature, high pressure urea autoclave is______________________?
A. Excess liquid ammonia and liquefied CO2
B. Excess liquid ammonia and compressed CO2 gas
C. Liquid ammonia and excess compressed CO2
D. Compressed ammonia gas and excess compressed CO2
Electric process as compared to wet process (for the manufacture of phosphoric acid) ?
A. Can use only high grade phosphate rock
B. Is used less frequently
C. Produces a valuable by-product called gypsum
D. Is weak acid process
Reaction of ______________ acid with phosphate rock produces superphosphates?
A. Hydrochloric
B. Sulphuric
C. Nitric
D. Phosphoric
Effectiveness of a fertiliser is independent of the ___________________?
A. Nature of soil
B. Type of crop
C. pH of soil
D. None of these
Urea is a better fertilizer than ammonium sulphate, because__________________?
A. It is cheaper
B. Nitrogen content is higher
C. It is not poisonous
D. It is easy to manufacture
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