Fertiliser Technology Urea is represented as NH₃CO.CH₃ NH.CO₂.NH NH₂.CO.NH₂ NH₃.CO₂.NH₃ NH₃CO.CH₃ NH.CO₂.NH NH₂.CO.NH₂ NH₃.CO₂.NH₃ ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Lower temperature and large excess of ammonia in urea melt Is undersirable Decreases biuret formation Increases biuret formation Does not effect biuret formation Is undersirable Decreases biuret formation Increases biuret formation Does not effect biuret formation 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 CaSO₄ .½H₂O and CaSO₄ crystals Pyrophosphoric acid Metaphosphoric acid All of these CaSO₄ .½H₂O and CaSO₄ crystals Pyrophosphoric acid Metaphosphoric acid All of these 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 Comparatively higher pressure drop Higher pumping cost Chances of entrainment and disturbance of catalyst bed High cost of the high pressure vessel used for the reactor Comparatively higher pressure drop Higher pumping cost Chances of entrainment and disturbance of catalyst bed High cost of the high pressure vessel used for the reactor ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas? Tar Water Naphtha Coal/coke oven gas Tar Water Naphtha Coal/coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Reaction of calcium fluorapatite with sulphuric acid produces Ortho-phosphoric acid Red phosphorous Simple superphosphate Triple superphosphate Ortho-phosphoric acid Red phosphorous Simple superphosphate Triple superphosphate ANSWER DOWNLOAD EXAMIANS APP
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