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Fertiliser Technology

Fertiliser Technology
The main constituent of rock phosphate is

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

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Fertiliser Technology
With increases in pressure, the conversion of ammonium carbamate into urea

Remains unaltered
Decreases
Increases
Can either increase or decrease depends on biuret content

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

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

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Fertiliser Technology
A fertiliser contains 82% N₂. It could be

Liquid NH₃
Urea
None of these
Ammonium nitrate

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Fertiliser Technology
Reaction of orthophosphoric acid with phosphate rock produces

Superphosphate
Triple superphosphate
Monoammonium phosphate
Metaphosphoric acid

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Fertiliser Technology
Which of the following is a natural inorganic fertiliser?

Gobar mannure
Oilcake
Chile salt petre
None of these

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