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FERTILISER TECHNOLOGY

Fertiliser Technology
Triple superphosphate is chemically represented as

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

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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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Fertiliser Technology
Reaction of phosphate rock with 98% H₂SO₄ produces

None of these
White phosphorous
Superphosphate
Orthophosphoric acid

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Fertiliser Technology
Reaction of calcium fluorapatite with sulphuric acid produces

Triple superphosphate
Simple superphosphate
Red phosphorous
Ortho-phosphoric acid

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Fertiliser Technology
Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in

Substantially wet non-flowing and sticky product
Low bulk density product
Non-spherical prills
Biuret formation

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