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Fertiliser Technology

Fertiliser Technology
Triple superphosphate is chemically represented as

3Ca₃(PO₄)₂
Ca(H₂PO₄)₂
Ca(PO₃)₂
CaF₂.3Ca₃(PO₄)₂

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Fertiliser Technology
Naphtha in a fertiliser plant is used as a source of

O₂
N₂
Fuel
H₂

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

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

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Fertiliser Technology
Both white phosphorous as well as red phosphorous

Reacts with hot caustic soda solution to give phosphine
Burns when heated in air
Are soluble in CS₂
All of these

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Fertiliser Technology
Rock phosphate constitutes mainly of

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

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Fertiliser Technology
H₄P₂O₇ is the chemical formula of __________ phosphoric acid.

Ortho
None of these
Pyro
Meta

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