Search
.Management Sciences
Category: Fertilizer Technology
An increase in the NH3/CO2 ratio in urea manufacture results in__________________?
A. Increased degree of conversion of CO2 to urea
B. Decreased degree of conversion of NH3 to urea
C. Decreased yield of urea
D. Decreased specific volume of molten mass
Which of the following fertilizers is used as a cattle feed ?
A. Urea
B. Calcium ammonium nitrate
C. Superphosphate
D. Ammonium sulphate
Base suspension fertiliser essentially contains___________________?
A. 13% N2 and 43% P2O5
B. 43% N2 and 13% P2O5
C. 43% N2 and 13% K2O
D. 43% K2O and 43% P2O5
CO2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in _________________?
A. Mono-ethanolamine (MEA)
B. Slaked lime
C. Ammoniacal liquor
D. Methyl-Ethyl Ketone (MEK)
During conversion of ammonium carbamate into urea, presence of large excess of water______________?
A. Increases the yield of urea
B. Adversely affects the yield of urea
C. Reduces the evaporator load by diluting the urea solution
D. Does not affect the yield of urea
Potassic fertilisers do not promote the development of ______________________?
A. Stems & leaves during early stage of plant growth
B. Starches of potatoes & grains
C. Sugar of fruits & vegetables
D. Fibrous materials of plants
Fertiliser plants get their N2 requirements _____________________?
A. By fractionation of liquefied air
B. By dissociating oxides of nitrogen
C. From coal gas (coke oven gas)
D. From producer gas
In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at________________?
A. Low pressure
B. High pressure
C. Very high temperature
D. Atmospheric pressure; as the pressure has no effect on conversion
____________ catalyst is used in the production of urea from CO2 and NH3?
A. Vanadium pentoxide
B. No
C. Alumina
D. Nickel
Recent Comments