Fertiliser Technology Triple superphosphate which contains about 46% P₂O₅ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration. 75-80 > 98 52-54 25-28 75-80 > 98 52-54 25-28 ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH₃ to NO is about __________ percent. 68 38 98 82 68 38 98 82 ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature Rate of reaction is very low None of these Very high pressure is required resulting in costly pressure vessel Space velocity of gas is very low resulting in decreased conversion Rate of reaction is very low None of these Very high pressure is required resulting in costly pressure vessel Space velocity of gas is very low resulting in decreased conversion ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Which of the following gasifiers can be attached to coal based fertiliser plants? Lurgi (high pressure) gasifier Gasifier working at 20 atm Gasifier working at 40 atm Kopper-Totzek gasifier Lurgi (high pressure) gasifier Gasifier working at 20 atm Gasifier working at 40 atm Kopper-Totzek gasifier ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Lower temperature and large excess of ammonia in urea melt Does not effect biuret formation Is undersirable Increases biuret formation Decreases biuret formation Does not effect biuret formation Is undersirable Increases biuret formation Decreases biuret formation ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology __________ is the undesirable by-product produced in the manufacture of urea. Ammonium carbonate Biuret Ammonium carbamate Carbon dioxide Ammonium carbonate Biuret Ammonium carbamate Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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