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Fertiliser Technology

Fertiliser Technology
Which is a catalyst promoter used in catalytic ammonia synthesis reaction?

MnO
K₂O
Cr₂O₃
Al₂O₃

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Fertiliser Technology
During conversion of ammonium carbamate into urea, presence of large excess of water

Reduces the evaporator load by diluting the urea solution
Increases the yield of urea
Does not affect the yield of urea
Adversely affects the yield of urea

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Fertiliser Technology
Urea is formed only

In liquid phase
At very high temperature
In vapour phase
At very low pressure (vacuum)

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Fertiliser Technology
Conditioners like finely divided peat are added to the fertiliser to

Produce bulk
Avoid caking & hardening
Increase its solubility
Counteract burning

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Fertiliser Technology
__________ is required more for leafy crops.

Potassium
Phosphorous
Carbon
Nitrogen

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Fertiliser Technology
The main constituent of rock phosphate is

None of these
Di-calcium phosphate
Mono-calcium phosphate
Fluorspar

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