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Fertiliser Technology

Fertiliser Technology
__________ is the most suitable fertiliser for paddy.

Ammonium sulphate
Potassium nitrate
Urea
Superphosphate

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Fertiliser Technology
Catalyst used in steam reforming of naphtha is

Platinum
Nickel
Silica gel
Rhodium

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Fertiliser Technology
Which of the following nitrogenous fertilisers has the highest percentage of nitrogen?

Ammonium sulphate
Urea
Calcium nitrate
Calcium ammonium nitrate (CAN)

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Fertiliser Technology
Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.

50
20
5
65

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Fertiliser Technology
Lower temperature and large excess of ammonia in urea melt

Is undersirable
Increases biuret formation
Decreases biuret formation
Does not effect biuret formation

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Fertiliser Technology
Dehydration of ammonium carbamate produces

Biuret
Ammonia water
None of these
Urea

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