Fertiliser Technology

Question: A phosphatic fertiliser contains 16% P2O5. It could be
[A].

dicalcium phosphate

[B].

superphosphate

[C].

triple superphosphate

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: A potassic fertiliser contains 50% K2O. It could be
[A].

potassium sulphate.

[B].

potassium chloride.

[C].

a mixture of NaCl+ KCl.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A nitrogenous fertiliser contains 20% N2. It could be
[A].

ammonium nitrate.

[B].

calcium ammonium nitrate (CAN).

[C].

urea.

[D].

ammonium chloride.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Action of phosphoric acid on rock phosphate produces
[A].

superphosphate

[B].

triple superphosphate

[C].

nitrophosphate

[D].

diammonium phosphate

Answer: Option B

Explanation:

No answer description available for this question.

Question: Catalyst used in the manufacture of NH3 by Haber’s process is finely divided
[A].

nickel

[B].

iron

[C].

vanadium pentoxide

[D].

alumina

Answer: Option B

Explanation:

No answer description available for this question.

Question: Out of the following, N2 content is minimum in
[A].

urea

[B].

ammonium nitrate

[C].

ammonium sulphate

[D].

ammonium chloride

Answer: Option C

Explanation:

No answer description available for this question.

Question: Maximum stability of white phosphorous is at
[A].

very high pressure

[B].

atmospheric pressure

[C].

room temperature

[D].

>600°C

Answer: Option D

Explanation:

No answer description available for this question.

Question: Catalytic ammonia synthesis reaction as in Haber’s process is
[A].

endothermic

[B].

exothermic

[C].

irreversible

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.
[A].

250-300

[B].

500-750

[C].

950-1050

[D].

1400-1450

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ catalyst is used in the production of urea from CO2 and NH3.
[A].

Vanadium pentoxide

[B].

No

[C].

Alumina

[D].

Nickel

Answer: Option B

Explanation:

No answer description available for this question.