Fertiliser Technology Sodium tri poly phosphate (STPP) is chemically represented as Na₅P3O₁₀ Na₄P3O₈ Na₃P4O₆ Na₂PO₄ Na₅P3O₁₀ Na₄P3O₈ Na₃P4O₆ Na₂PO₄ 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 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 Rate of reaction is very low None of these Very high pressure is required resulting in costly pressure vessel ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology __________ is the undesirable by-product produced in the manufacture of urea. Carbon dioxide Ammonium carbonate Biuret Ammonium carbamate Carbon dioxide Ammonium carbonate Biuret Ammonium carbamate ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Catalytic ammonia synthesis reaction as in Haber's process is Irreversible Endothermic Exothermic None of these Irreversible Endothermic Exothermic None of these ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Biuret formation in urea is kept at minimum (< 1 %), because it is Explosive in nature Corrosive in nature Helpful in decomposition of urea Toxic and harmful to some crops Explosive in nature Corrosive in nature Helpful in decomposition of urea Toxic and harmful to some crops 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 All of these Metaphosphoric acid Pyrophosphoric acid CaSO₄ .½H₂O and CaSO₄ crystals All of these Metaphosphoric acid Pyrophosphoric acid CaSO₄ .½H₂O and CaSO₄ crystals ANSWER DOWNLOAD EXAMIANS APP
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