Question: Yield of elemental phosphorous from rock phosphate is about __________ percent.
[A].1-2
15-25
40-45
60-65
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Fertiliser Technology
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
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
high corrosion rate
increased cost of equipment
all (a), (b) & (c)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Monte catini process is used for the manufacture of
Question: Monte catini process is used for the manufacture of
[A].nitric acid
phosphoric acid
urea
calcium ammonium nitrate (CAN)
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Ammonium sulphate fertiliser is
Question: Ammonium sulphate fertiliser is
[A].the highest concentration nitrogenous fertiliser.
the best fertiliser for paddy.
a basic fertiliser.
a neutral fertiliser.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
__________ is required more for leafy crops.
Question: __________ is required more for leafy crops.
[A].Nitrogen
Phosphorous
Potassium
Carbon
[A].
[B].
[C].
[D].
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
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
pyrophosphoric acid
metaphosphoric acid
all (a), (b) and (c).
[A].
[B].
[C].
[D].
Answer: Option A
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
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.
requires lower capital investment in the plant.
produces lower purity acid.
is very costly.
[A].
[B].
[C].
[D].
Answer: Option C
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?
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
Butyl alcohol
Toluene
Hexane
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
(CH3 C6 H4)3 PO4 is the chemical formula of
Question: (CH3 C6 H4)3 PO4 is the chemical formula of
[A].triple superphosphate
tricresyl phosphate
flourapatite
superphosphate
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Chemical formula of metaphosphoric acid is
Question: Chemical formula of metaphosphoric acid is
[A].H3PO4
H4P2O7
HPO3
same as that of pyrophosphoric acid
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.