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Fertiliser Technology

Fertiliser Technology
Commercial fertilisers are available mostly in the form of

Flakes
Grannules
Powder
Lumps

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Fertiliser Technology
Which is the best fertiliser for paddy?

Potassium nitrate
Superphosphate
Nitro-phosphate
Ammonium sulphate

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Fertiliser Technology
Nitrogen content of urea is about __________ percent.

46
80
94
10

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Fertiliser Technology
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces

Superphosphate
Ammonium phosphate
Phosphorous
Phosphoric acid

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Fertiliser Technology
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because

It is hygroscopic and explosive in nature
It is highly acidic in nature
It is a liquid at room temperature
Its nitrogen content is very less

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Fertiliser Technology
Phosphorus vapour comprises of

P₃
P
P₂
P₄

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