Raw materials for urea production are _________________?
A. CO2 and N2
B. CO2, H2 and N2
C. NH3 and CO
D. HNO3 and CaCO3
Fertilizer Technology
Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an ______________ reaction?
Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an ______________ reaction?
A. Catalytic
B. Exothermic
C. Endothermic
D. Reversible
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at ______________ °C?
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at ______________ °C?
A. 250-300
B. 500-750
C. 950-1050
D. 1400-1450
A phosphatic fertiliser contains 16% P2O5. It could be________________?
A phosphatic fertiliser contains 16% P2O5. It could be________________?
A. Dicalcium phosphate
B. Superphosphate
C. Triple superphosphate
D. None of these
Reaction of ortho-phosphoric acid with phosphate rock produces _________________?
Reaction of ortho-phosphoric acid with phosphate rock produces _________________?
A. Superphosphate
B. Triple superphosphate
C. Meta-phosphoric acid
D. Monoammonium phosphate
Biuret formation in urea is kept at minimum (< 1 %), because it is___________________?
Biuret formation in urea is kept at minimum (< 1 %), because it is___________________?
A. Corrosive in nature
B. Toxic and harmful to some crops
C. Helpful in decomposition of urea
D. Explosive in nature
Effectiveness of a fertiliser is independent of the ___________________?
Effectiveness of a fertiliser is independent of the ___________________?
A. Nature of soil
B. Type of crop
C. pH of soil
D. None of these
Which is the best fertiliser for paddy ?
Which is the best fertiliser for paddy ?
A. Ammonium sulphate
B. Nitro-phosphate
C. Superphosphate
D. Potassium nitrate
Action of phosphoric acid on rock phosphate produces_________________?
Action of phosphoric acid on rock phosphate produces_________________?
A. Superphosphate
B. Triple superphosphate
C. Nitrophosphate
D. Diammonium phosphate
Optimum reaction temperature in steam reforming of naphtha is ______________ °C?
Optimum reaction temperature in steam reforming of naphtha is ______________ °C?
A. 700 – 1000
B. 300 – 450
C. 1500-1700
D. 100-200