Main component of bone ash is _________________?

A. Calcium sulphate
B. Calcium phosphate
C. Calcium carbonate
D. Sodium phosphate

Ammonium nitrate (a fertiliser) is coated with limestone powder to ____________________?

A. Increase its nitrogen content
B. Cut down its production cost
C. Avoid the risk of explosion
D. Add extra nutrient as fertiliser

Heating of ortho-phosphoric acid to about 900°C, produces_________________?

A. Meta-phosphoric acid
B. Pyrophosphoric acid
C. No change in it
D. None of these

Prilling tower is found in the flowsheet for the manufacture of__________________?

A. Ammonia
B. Urea
C. Superphosphate
D. Triple superphosphate

Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?

A. Nitrogenous fertilisers
B. Phosphatic fertilisers
C. Potassic fertiliser
D. None of these

Both white phosphorous as well as red phosphorous_________________?

A. Are soluble in CS2
B. Burns when heated in air
C. Reacts with hot caustic soda solution to give Phosphine
D. All A., B., and C.

Dehydration of ammonium carbamate to yield urea is a/an __________________ reaction?

A. Exothermic
B. Endothermic
C. Autocatalytic
D. Catalytic

Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent?

A. 5
B. 20
C. 50
D. 65

Flushing liquor used for cooling coke oven gas constitutes of __________________?

A. Ammoniacal liquor
B. K2CO3 solution
C. Dilute H2SO4
D. Dilute HCl

Which of the following is not a mixed fertiliser ?

A. Nitrophosphate
B. Calcium ammonium nitrate (CAN)
C. Ammonium phosphate
D. None of these