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Fertiliser Technology

Fertiliser Technology
Reaction of dilute sulphuric acid with phosphate rock produces

Triple superphosphate
Gypsum
Phosphoric acid
Superphosphate

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Fertiliser Technology
(CH₃ C₆ H₄)₃ PO₄ is the chemical formula of

Tricresyl phosphate
Triple superphosphate
Superphosphate
Flourapatite

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Fertiliser Technology
Maximum nitrogen percentage is in

Liquid ammonia
Urea
Ammonium sulphate
Calcium ammonium nitrate

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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

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

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Fertiliser Technology
Reaction of cresylic acid with __________ produces tricresyl phosphate.

Calcium phosphate
Ammonium phosphate
Phosphorous oxychloride
Phosphorous pentoxide

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Fertiliser Technology
Catalytic ammonia synthesis reaction as in Haber's process is

Exothermic
None of these
Irreversible
Endothermic

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