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Fertiliser Technology

Fertiliser Technology
Nitrogen content of a nitrogenous fertiliser is 35%. It could be

Calcium ammonium nitrate (CAN)
Urea
Ammonium sulphate
Ammonium nitrate

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

Urea
Calcium nitrate
Ammonium sulphate
Calcium ammonium nitrate (CAN)

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Fertiliser Technology
The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.

100
30
95
60

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

Counteract burning
Produce bulk
Avoid caking & hardening
Increase its solubility

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Fertiliser Technology
Action of phosphoric acid on rock phosphate produces

Triple superphosphate
Nitrophosphate
Diammonium phosphate
Superphosphate

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Fertiliser Technology
Which is the best fertiliser for paddy?

Ammonium sulphate
Superphosphate
Nitro-phosphate
Potassium nitrate

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