Fertiliser Technology Nitric acid is produced on commercial scale in a fertiliser plant by Oxidation of ammonia None of these Passing air through high voltage electric arc CaNO₃ + H₂SO₄ reaction Oxidation of ammonia None of these Passing air through high voltage electric arc CaNO₃ + H₂SO₄ reaction ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Electric process as compared to wet process (for the manufacture of phosphoric acid) Is used less frequently Produces a valuable by-product called gypsum Is weak acid process Can use only high grade phosphate rock Is used less frequently Produces a valuable by-product called gypsum Is weak acid process Can use only high grade phosphate rock ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of Phosphoric acid Superphosphate Phosphorous Triple superphosphate Phosphoric acid Superphosphate Phosphorous Triple superphosphate 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 Space velocity of gas is very low resulting in decreased conversion Very high pressure is required resulting in costly pressure vessel Rate of reaction is very low None of these Space velocity of gas is very low resulting in decreased conversion Very high pressure is required resulting in costly pressure vessel ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable Metaphosphoric acid All of these Pyrophosphoric acid CaSO₄ .½H₂O and CaSO₄ crystals Metaphosphoric acid All of these Pyrophosphoric acid CaSO₄ .½H₂O and CaSO₄ crystals ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Promoter used in NH₃ synthesis catalyst is K₂O U₂O₃ SiO₃ V₂O₅ K₂O U₂O₃ SiO₃ V₂O₅ ANSWER DOWNLOAD EXAMIANS APP
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