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Fertiliser Technology

Fertiliser Technology
Heating of orthophosphoric acid to 250°C produces

None of these
No change in it
Pyrophosphoric acid
Metaphosphoric acid

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

None of these
Pyrophosphoric acid
Metaphosphoric acid
No change in it

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Fertiliser Technology
Monte catini process is a widely used process for the manufacture of

None of these
Triple superposphate
Urea
Calcium ammonium nitrate

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Fertiliser Technology
Catalyst used in the manufacture of NH₃ by Haber's process is finely divided

Nickel
Iron
Vanadium pentoxide
Alumina

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Fertiliser Technology
A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.

Sand & coke
And coke
And sand
Salt & coke

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Fertiliser Technology
Triple superphosphate which contains about 46% P₂O₅ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.

52-54
> 98
25-28
75-80

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