Fertiliser Technology Iron is not used alone as a catalyst in ammonia synthesis, because It decomposes ammonia None of these Its activity declines rapidly, if heated to above 520°C It gets oxidised above 500°C It decomposes ammonia None of these Its activity declines rapidly, if heated to above 520°C It gets oxidised above 500°C ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent. 30 95 60 100 30 95 60 100 ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology During conversion of ammonium carbamate into urea, presence of large excess of water Does not affect the yield of urea Increases the yield of urea Reduces the evaporator load by diluting the urea solution Adversely affects the yield of urea Does not affect the yield of urea Increases the yield of urea Reduces the evaporator load by diluting the urea solution Adversely affects the yield of urea ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C. 950-1050 1400-1450 250-300 500-750 950-1050 1400-1450 250-300 500-750 ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology Phosphatic fertilisers Accelerate fruit formation in later stages of growth Lessen the effect of excessive nitrogen application Are useful during early stage of the plant growth None of these Accelerate fruit formation in later stages of growth Lessen the effect of excessive nitrogen application Are useful during early stage of the plant growth None of these ANSWER DOWNLOAD EXAMIANS APP
Fertiliser Technology In an ammonia plant, the purge off is essential to Maintain inert gas concentration within a limit Remove excess poisonous gases Remove uncondensed ammonia vapour Maintain H₂ : N₂ ratio at 3 :1 Maintain inert gas concentration within a limit Remove excess poisonous gases Remove uncondensed ammonia vapour Maintain H₂ : N₂ ratio at 3 :1 ANSWER DOWNLOAD EXAMIANS APP
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