Fertilizer Technology

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. Dicalcium phosphate
B. Superphosphate
C. Triple superphosphate
D. None of these

A. Superphosphate
B. Triple superphosphate
C. Meta-phosphoric acid
D. Monoammonium phosphate

A. Corrosive in nature
B. Toxic and harmful to some crops
C. Helpful in decomposition of urea
D. Explosive in nature

A. Nature of soil
B. Type of crop
C. pH of soil
D. None of these

A. Ammonium sulphate
B. Nitro-phosphate
C. Superphosphate
D. Potassium nitrate

A. Superphosphate
B. Triple superphosphate
C. Nitrophosphate
D. Diammonium phosphate

A. 700 – 1000
B. 300 – 450
C. 1500-1700
D. 100-200

A. Nitrate nitrogen is quick acting
B. Ammoniacal nitrogen is quick acting
C. Nitrate nitrogen is slower acting
D. None of these

A. Co-Mo
B. Pt-Rh
C. Silica gel
D. Nickel