Fertiliser Technology Sodium tri poly phosphate (STPP) is chemically represented as Na₃P4O₆ Na₅P3O₁₀ Na₄P3O₈ Na₂PO₄ Na₃P4O₆ Na₅P3O₁₀ Na₄P3O₈ Na₂PO₄ ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology An increase in the NH₃/CO₂ ratio in urea manufacture results in Increased degree of conversion of CO₂ to urea Decreased yield of urea Decreased degree of conversion of NH₃ to urea Decreased specific volume of molten mass Increased degree of conversion of CO₂ to urea Decreased yield of urea Decreased degree of conversion of NH₃ to urea Decreased specific volume of molten mass 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 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 Rate of reaction is very low ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst. All of these Improving the strength & heat resistance Stabilisation Increasing the effectiveness All of these Improving the strength & heat resistance Stabilisation Increasing the effectiveness ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Flushing liquor used for cooling coke oven gas constitutes of Dilute H₂SO₄ Ammoniacal liquor K₂CO₃ solution Dilute HCl Dilute H₂SO₄ Ammoniacal liquor K₂CO₃ solution Dilute HCl ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Fertiliser value of a nitrogeneous fertiliser is expressed in terms of its __________ content. NO₂ KNO₃ NHO₃ N₂ NO₂ KNO₃ NHO₃ N₂ ANSWER DOWNLOAD EXAMIANS APP
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