Fertiliser Technology

Question: H4P2O7 is the chemical formula of __________ phosphoric acid.
[A].

pyro

[B].

ortho

[C].

meta

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: H3PO4 is the chemical formula of __________ phosphoric acid.
[A].

pyro

[B].

ortho

[C].

meta

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
[A].

50-80

[B].

250-400

[C].

1000-1200

[D].

800-900

Answer: Option B

Explanation:

No answer description available for this question.

Question: Heating a mixture of phosphate rock, coke and sand in an electric furnace produces
[A].

phosphoric acid

[B].

ammonium phosphate

[C].

phosphorous

[D].

superphosphate

Answer: Option C

Explanation:

No answer description available for this question.

Question: Nitrogen content of a nitrogenous fertiliser is 35%. It could be
[A].

urea

[B].

ammonium nitrate

[C].

calcium ammonium nitrate (CAN)

[D].

ammonium sulphate

Answer: Option B

Explanation:

No answer description available for this question.

Question: Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction.
[A].

reversible

[B].

catalytic

[C].

exothermic

[D].

endothermic

Answer: Option D

Explanation:

No answer description available for this question.

Question: Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction.
[A].

catalytic

[B].

exothermic

[C].

endothermic

[D].

reversible

Answer: Option B

Explanation:

No answer description available for this question.

Question: Color of nitric acid is light yellow due to the presence of
[A].

NO

[B].

NO2

[C].

N2H5

[D].

NH3

Answer: Option B

Explanation:

No answer description available for this question.

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

thermal cracking

[B].

steam reforming

[C].

partial oxidation

[D].

hydrogenation

Answer: Option B

Explanation:

No answer description available for this question.

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.