Fertiliser Technology Which is a catalyst promoter used in catalytic ammonia synthesis reaction? Al₂O₃ K₂O Cr₂O₃ MnO Al₂O₃ K₂O Cr₂O₃ MnO ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Temperature and pressure in urea autoclave is 120°C and 300 atm 190°C and 200 atm 200°C and 10 atm 400°C and 550 atm 120°C and 300 atm 190°C and 200 atm 200°C and 10 atm 400°C and 550 atm ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology In an ammonia plant, the purge off is essential to Remove excess poisonous gases Remove uncondensed ammonia vapour Maintain H₂ : N₂ ratio at 3 :1 Maintain inert gas concentration within a limit Remove excess poisonous gases Remove uncondensed ammonia vapour Maintain H₂ : N₂ ratio at 3 :1 Maintain inert gas concentration within a limit ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Catalyst used in the manufacture of NH₃ by Haber's process is finely divided Nickel Alumina Vanadium pentoxide Iron Nickel Alumina Vanadium pentoxide Iron ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Reaction of calcium fluorapatite with sulphuric acid produces Simple superphosphate Triple superphosphate Ortho-phosphoric acid Red phosphorous Simple superphosphate Triple superphosphate Ortho-phosphoric acid Red phosphorous ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of Chances of entrainment and disturbance of catalyst bed High cost of the high pressure vessel used for the reactor Higher pumping cost Comparatively higher pressure drop Chances of entrainment and disturbance of catalyst bed High cost of the high pressure vessel used for the reactor Higher pumping cost Comparatively higher pressure drop ANSWER DOWNLOAD EXAMIANS APP
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