Fertiliser Technology

Question: Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.
[A].

5

[B].

20

[C].

50

[D].

65

Answer: Option B

Explanation:

No answer description available for this question.

Question: In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at
[A].

low pressure.

[B].

high pressure.

[C].

very high temperature.

[D].

atmospheric pressure; as the pressure has no effect on conversion.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fauser Monte Catini converter is used for
[A].

ammonia synthesis (e.g. at FCI Sindri).

[B].

methanation of CO and CO2.

[C].

shift conversion (i.e. CO to CO2).

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: CO2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in
[A].

mono-ethanolamine (MEA)

[B].

slaked lime

[C].

ammoniacal liquor

[D].

Methyl-Ethyl Ketone (MEK)

Answer: Option A

Explanation:

No answer description available for this question.

Question: Fertilizer plant getting its hydrogen requirement partly from coke oven gas is situated at
[A].

Rourkela (under SAIL)

[B].

Barauni (under HFC)

[C].

Nangal (under NFL)

[D].

Talchar (under FCI)

Answer: Option A

Explanation:

No answer description available for this question.

Question: During conversion of ammonium carbamate into urea, presence of large excess of water
[A].

increases the yield of urea.

[B].

adversely affects the yield of urea.

[C].

reduces the evaporator load by diluting the urea solution.

[D].

does not affect the yield of urea.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Biuret formation in urea is kept at minimum (< 1 %), because it is
[A].

corrosive in nature.

[B].

toxic and harmful to some crops.

[C].

helpful in decomposition of urea.

[D].

explosive in nature.

Answer: Option B

Explanation:

No answer description available for this question.

Question: An increase in the NH3/CO2 ratio in urea manufacture results in
[A].

increased degree of conversion of CO2 to urea.

[B].

decreased degree of conversion of NH3 to urea.

[C].

decreased yield of urea.

[D].

decreased specific volume of molten mass.

Answer: Option A

Explanation:

No answer description available for this question.

Question: With increases in pressure, the conversion of ammonium carbamate into urea
[A].

increases

[B].

decreases

[C].

remains unaltered

[D].

can either increase or decrease depends on biuret content

Answer: Option A

Explanation:

No answer description available for this question.

Question: 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:

No answer description available for this question.