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Fertiliser Technology

Fertiliser Technology
Urea is a __________ fertiliser.

Nitrogenous
Potassic
None of these
Phosphatic

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Fertiliser Technology
Red phosphorous is changed into white phosphorous by

None of these
Melting under pressure
Vaporisation followed by condensation
Heating in presence of light

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Fertiliser Technology
Fertiliser plants get their N₂ requirements

By dissociating oxides of nitrogen
By fractionation of liquified air
From producer gas
From coal gas (coke oven gas)

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Fertiliser Technology
Ammonium nitrate (a fertiliser) is coated with limestone powder to

Increase its nitrogen content
Cut down its production cost
Add extra nutrient as fertiliser
Avoid the risk of explosion

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Fertiliser Technology
Rock phosphate constitutes mainly of

Mono-calcium phosphate
Di-calcium phosphate
Fluorapatite
Di-ammonium phosphate

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

K₂O
Al₂O₃
MnO
Cr₂O₃

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