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Fertiliser Technology

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

Vanadium pentoxide
Nickel
Iron
Alumina

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Fertiliser Technology
P₂O₅ content in superphosphate is about __________ percent.

85-90
15-20
30-35
65-70

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Fertiliser Technology
Electric process as compared to wet process (for the manufacture of phosphoric acid)

Can use only high grade phosphate rock
Produces a valuable by-product called gypsum
Is weak acid process
Is used less frequently

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Fertiliser Technology
Fertiliser value of a nitrogeneous fertiliser is expressed in terms of its __________ content.

KNO₃
NHO₃
N₂
NO₂

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Fertiliser Technology
NPK fertiliser is a __________ fertiliser.

Phosphatic
Mixed
Complex
Nitrogenous

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

Tricresyl phosphate
Flourapatite
Triple superphosphate
Superphosphate

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