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CHEMICAL ENGINEERING

Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

CHEMICAL ENGINEERING, Fertiliser Technology /
Question: Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
[A].

increased biuret formation

[B].

high corrosion rate

[C].

increased cost of equipment

[D].

all (a), (b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done. Read More »

CHEMICAL ENGINEERING, Fertiliser Technology

In the manufacture of orthophosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable

CHEMICAL ENGINEERING, Fertiliser Technology /
Question: In the manufacture of orthophosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable
[A].

CaSO4 .H2O and CaSO4 crystals

[B].

pyrophosphoric acid

[C].

metaphosphoric acid

[D].

all (a), (b) and (c).

Answer: Option A

Explanation:

No answer description available for this question.

In the manufacture of orthophosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable Read More »

CHEMICAL ENGINEERING, Fertiliser Technology

In the manufacture of H3 PO4 (ortho), ; strong H2 SO4 leaching wet process as compared to electric furnace process

CHEMICAL ENGINEERING, Fertiliser Technology /
Question: In the manufacture of H3 PO4 (ortho), ; strong H2 SO4 leaching wet process as compared to electric furnace process
[A].

uses lower grade phosphate rock.

[B].

requires lower capital investment in the plant.

[C].

produces lower purity acid.

[D].

is very costly.

Answer: Option C

Explanation:

No answer description available for this question.

In the manufacture of H3 PO4 (ortho), ; strong H2 SO4 leaching wet process as compared to electric furnace process Read More »

CHEMICAL ENGINEERING, Fertiliser Technology

Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?

CHEMICAL ENGINEERING, Fertiliser Technology /
Question: Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?
[A].

Iso propyl alcohol

[B].

Butyl alcohol

[C].

Toluene

[D].

Hexane

Answer: Option B

Explanation:

No answer description available for this question.

Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching? Read More »

CHEMICAL ENGINEERING, Fertiliser Technology