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Fertiliser Technology

Fertiliser Technology
Phosphatic fertiliser is graded based on its __________ content.

H₃PO₄
P₂O₅
PCl5
P₂O₃

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Fertiliser Technology
P₂O₅ content in triple superphosphate is about __________ percent.

42-50
70-75
15-20
85-90

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Fertiliser Technology
Reaction of phosphate rock with 98% H₂SO₄ produces

None of these
White phosphorous
Orthophosphoric acid
Superphosphate

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Fertiliser Technology
Heating of orthophosphoric acid to 250°C produces

None of these
Metaphosphoric acid
No change in it
Pyrophosphoric acid

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Fertiliser Technology
Heating of orthophosphoric acid to about 900°C, produces

Pyrophosphoric acid
None of these
No change in it
Metaphosphoric acid

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Fertiliser Technology
P₂O₅ percentage in the phosphoric acid produced by wet process is about

70
10
50
30

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