CHEMICAL ENGINEERING

Question: Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber’s process ?
[A].

High pressure, low reactants concentration, high temperature.

[B].

High pressure, low reactants concentration, low temperature.

[C].

High pressure, high reactants concentration, low temperature.

[D].

Low pressure, high reactants concentration, low temperature.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Ammonia synthesis gas is produced from fuel oil by
[A].

steam reforming

[B].

hydrocracking

[C].

partial oxidation

[D].

hydrogenation

Answer: Option C

Explanation:

No answer description available for this question.

Question: C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about
[A].

2

[B].

6

[C].

13

[D].

20

Answer: Option B

Explanation:

No answer description available for this question.

Question: Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is
[A].

exothermic

[B].

endothermic

[C].

autocatalytic

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nitric acid is produced on commercial scale in a fertiliser plant by
[A].

oxidation of ammonia.

[B].

CaNO3 + H2SO4 reaction.

[C].

passing air through high voltage electric arc.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: P2O5 content in triple superphosphate is about __________ percent.
[A].

42-50

[B].

15-20

[C].

85-90

[D].

70-75

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nitrolime is
[A].

calcium nitrate.

[B].

calcium ammonium nitrate.

[C].

a mixture of nitric acid and lime.

[D].

a mixture of ammonium nitrate and calcium nitrate.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Optimum reaction temperature in steam reforming of naphtha is __________ °C.
[A].

700 – 1000

[B].

300 – 450

[C].

1500-1700

[D].

100-200

Answer: Option A

Explanation:

No answer description available for this question.

Question: Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the
[A].

osmotic pressure of the soil water becomes less than that of the plant sap.

[B].

soil becomes too alkaline.

[C].

osmotic pressure of the soil water becomes higher than that of the plant sap.

[D].

soil becomes too acidic.

Answer: Option C

Explanation:

No answer description available for this question.

Question: P2O5 content in superphosphate is about __________ percent.
[A].

30-35

[B].

15-20

[C].

65-70

[D].

85-90

Answer: Option B

Explanation:

No answer description available for this question.