Fertiliser Technology Catalyst used in the manufacture of NH₃ by Haber's process is finely divided Nickel Alumina Iron Vanadium pentoxide Nickel Alumina Iron Vanadium pentoxide ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Dehydration of ammonium carbamate to yield urea is a/an __________ reaction. Catalytic Endothermic Autocatalytic Exothermic Catalytic Endothermic Autocatalytic Exothermic ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology In the manufacture of H₃ PO₄ (ortho), ; strong H₂ SO₄ leaching wet process as compared to electric furnace process Uses lower grade phosphate rock Requires lower capital investment in the plant Produces lower purity acid Is very costly Uses lower grade phosphate rock Requires lower capital investment in the plant Produces lower purity acid Is very costly 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. Improving the strength & heat resistance Stabilisation All of these Increasing the effectiveness Improving the strength & heat resistance Stabilisation All of these Increasing the effectiveness ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology An increase in the NH₃/CO₂ ratio in urea manufacture results in Decreased specific volume of molten mass Decreased yield of urea Decreased degree of conversion of NH₃ to urea Increased degree of conversion of CO₂ to urea Decreased specific volume of molten mass Decreased yield of urea Decreased degree of conversion of NH₃ to urea Increased degree of conversion of CO₂ to urea ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Yield of elemental phosphorous from rock phosphate is about __________ percent. 40-45 15-25 60-65 1-2 40-45 15-25 60-65 1-2 ANSWER DOWNLOAD EXAMIANS APP
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