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Chemical Engineering - Fertiliser Technology

Exercise : Fertiliser Technology - Section 4
41.
Pick out the wrong statement.
Nitrogen is normally supplied in fertiliser either in ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions or nitrate ions and forms amino acids.
Calcium present in the fertiliser helps in correcting the soil acidity.
Particle size range of a good grannular fertiliser is 10-15 mesh and it contains less moisture as compared to finely divided powder form of fertiliser.
Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
P2O5 content in superphosphate is about __________ percent.
30-35
15-20
65-70
85-90
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction.
catalytic
endothermic
exothermic
autocatalytic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Temperature and pressure in urea autoclave is
120°C and 300 atm.
190°C and 200 atm.
400°C and 550 atm.
200°C and 10 atm.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.
nitrogenous
phosphatic
potassic
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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