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Fertiliser Technology

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

Na₄P3O₈
Na₃P4O₆
Na₂PO₄
Na₅P3O₁₀

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Fertiliser Technology
Vetrocoke solution is

A mixture of K₂CO₃ and As₂O₃
Na₂SO₄
A mixture of Na₂CO₃ and As₂O₃
K₂SO₄

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Fertiliser Technology
Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at

Sindri (under FCI)
Rourkela (under SAIL)
Bokaro (under SAIL)
Baroda (under G.S.F.C.)

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Fertiliser Technology
In calcium ammonium nitrate (CAN) fertil-ser

Ammoniacal nitrogen is quick acting
Nitrate nitrogen is slower acting
None of these
Nitrate nitrogen is quick acting

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Fertiliser Technology
Reaction of orthophosphoric acid with soda ash produces

Tricresyl phosphate
Nitrophosphate
Sodium tripolyphosphate (STPP)
Tributyl phosphate

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Fertiliser Technology
Tricresyl phosphate is chemically represented as

(CH₃ C₆ H₄)₃ PO₄
NH₄H₂PO₄
Ca₁₀(PO₄)3F₆
(NH₄)₂HPO₄

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