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Fertiliser Technology

Fertiliser Technology
Sodium tri poly phosphate (STPP) is chemically represented as

Na₂PO₄
Na₃P4O₆
Na₄P3O₈
Na₅P3O₁₀

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Fertiliser Technology
Reaction of orthophosphoric acid with phosphate rock produces

Triple superphosphate
Superphosphate
Monoammonium phosphate
Metaphosphoric acid

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Fertiliser Technology
Commercial fertilisers are available mostly in the form of

Powder
Flakes
Grannules
Lumps

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

Ortho
Meta
Pyro
None of these

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Fertiliser Technology
A phosphatic fertiliser contains 16% P₂O₅. It could be

None of these
Dicalcium phosphate
Triple superphosphate
Superphosphate

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Fertiliser Technology
Both white phosphorous as well as red phosphorous

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

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