Chemical Engineering - Fertiliser Technology

21. 

Main constituent of phosphate rock is

A. ammonium phosphate
B. flour apatite
C. calcium fluoride
D. calcium phosphate

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

22. 

Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition ?

A. Electrolysis of water.
B. Cryogenic removal of H2 from coke oven gas.
C. Steam reforming of naphtha.
D. Natural gas cracking.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

23. 

Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction.

A. catalytic
B. exothermic
C. endothermic
D. reversible

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

24. 

Heating a mixture of phosphate rock, coke and sand in an electric furnace produces

A. phosphoric acid
B. ammonium phosphate
C. phosphorous
D. superphosphate

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

25. 

A potassic fertiliser contains 50% K2O. It could be

A. potassium sulphate.
B. potassium chloride.
C. a mixture of NaCl+ KCl.
D. none of these.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.