Chemical Engineering - Fertiliser Technology

46. 

Ammonium sulphate can be produced by reacting gypsum with

A. ammonia
B. ammonium carbonate
C. nitric acid
D. none of these

Answer: Option B

Explanation:

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47. 

Nitrogenous fertiliser is required

A. during the early stage of growth to promote development of stem and leaves.
B. for accelerating fruit formation in later stage of growth.
C. to lessen the effect of excessive potash application.
D. none of these.

Answer: Option A

Explanation:

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48. 

Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at

A. Rourkela (under SAIL)
B. Bokaro (under SAIL)
C. Sindri (under FCI)
D. Baroda (under G.S.F.C.)

Answer: Option C

Explanation:

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49. 

Catalyst used in Haber's process for ammonia production is

A. reduced iron oxide
B. nickel
C. vanadium pentoxide
D. silica gel

Answer: Option A

Explanation:

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50. 

Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium

A. carbonate
B. phosphate
C. bicarbonate
D. silicate

Answer: Option A

Explanation:

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

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