Chemical Engineering - Fertiliser Technology

31. 

Ammonium sulphate fertiliser is

A. the highest concentration nitrogenous fertiliser.
B. the best fertiliser for paddy.
C. a basic fertiliser.
D. a neutral fertiliser.

Answer: Option B

Explanation:

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32. 

Lower temperature and large excess of ammonia in urea melt

A. increases biuret formation
B. decreases biuret formation
C. is undersirable
D. does not effect biuret formation

Answer: Option B

Explanation:

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33. 

Superphosphate is manufactured by reacting phosphate rock with

A. acetic acid
B. sulphuric acid
C. aluminium chloride
D. none of these

Answer: Option B

Explanation:

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34. 

Vetrocoke solution is

A. a mixture of K2CO3 and As2O3.
B. K2SO4.
C. a mixture of Na2CO3 and As2O3.
D. Na2SO4.

Answer: Option A

Explanation:

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35. 

In calcium ammonium nitrate (CAN) fertil-ser

A. nitrate nitrogen is quick acting
B. ammoniacal nitrogen is quick acting
C. nitrate nitrogen is slower acting
D. none of these

Answer: Option A

Explanation:

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