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Chemical Engineering - Fertiliser Technology

Exercise : Fertiliser Technology - Section 1
11.
During conversion of ammonium carbamate into urea, presence of large excess of water
increases the yield of urea.
adversely affects the yield of urea.
reduces the evaporator load by diluting the urea solution.
does not affect the yield of urea.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Hydrogen content of coke oven gas is __________ percent.
4
22
58
84
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Pick out the wrong statement.
'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid.
Chemically unreactive nature of red phosphorous is due to its polymeric structure.
Red phosphorous is the most reactive allotropic form of phosphorous.
Red phosphorous, which is used in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Ammonium nitrate (a fertiliser) is coated with limestone powder to
increase its nitrogen content.
cut down its production cost.
avoid the risk of explosion.
add extra nutrient as fertiliser.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Action of phosphoric acid on rock phosphate produces
superphosphate
triple superphosphate
nitrophosphate
diammonium phosphate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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