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.Management Sciences
Category: Fertilizer Technology
In _____________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed?
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A. Fauser-Montecatini
B. Claude
C. Uhde
D. Kellogg
Low grade phosphate rock can be used in electrical furnace, because__________________?
A. Of the better CaO/SiO2 balance for slag formation
B. CaO content is less
C. It is cheap
D. It produces low cost product
Optimum reaction temperature in steam reforming of naphtha is ______________ °C?
A. 700 – 1000
B. 300 – 450
C. 1500-1700
D. 100-200
Phosphatic fertiliser is graded based on its _____________ content?
A. P2O3
B. PCl5
C. P2O5
D. H3PO4
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium___________________?
A. Carbonate
B. Phosphate
C. Bicarbonate
D. Silicate
Maximum stability of white phosphorous is at__________________?
A. Very high pressure
B. Atmospheric pressure
C. Room temperature
D. > 600°C
Ammonium nitrate (a fertiliser) is coated with limestone powder to ____________________?
A. Increase its nitrogen content
B. Cut down its production cost
C. Avoid the risk of explosion
D. Add extra nutrient as fertiliser
(CH3 C6 H4)3 PO4 is the chemical formula of__________________?
A. Triple superphosphate
B. Tricresyl phosphate
C. Fluorapatite
D. Superphosphate
Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent?
A. 5
B. 20
C. 50
D. 65
Rock phosphate constitutes mainly of___________________?
A. Fluorapatite
B. Di-calcium phosphate
C. Mono-calcium phosphate
D. Di-ammonium phosphate
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