Chemical Engineering - Fertiliser Technology

36. 

NPK fertiliser is a __________ fertiliser.

A. complex
B. mixed
C. nitrogenous
D. phosphatic

Answer: Option B

Explanation:

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37. 

Reaction of calcium fluorapatite with sulphuric acid produces

A. ortho-phosphoric acid.
B. simple superphosphate.
C. triple superphosphate.
D. red phosphorous.

Answer: Option B

Explanation:

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38. 

Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas?

A. Water
B. Naphtha
C. Tar
D. Coal/coke oven gas

Answer: Option C

Explanation:

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39. 

Fertiliser value of a nitrogeneous fertiliser is expressed in terms of its __________ content.

A. N2
B. KNO3
C. NO2
D. NHO3

Answer: Option A

Explanation:

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40. 

Triple superphosphate is made by reacting phosphate rock with __________ acid.

A. phosphoric
B. nitric
C. sulphuric
D. hydrochloric

Answer: Option A

Explanation:

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