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Fertiliser Technology

Fertiliser Technology
Which is a catalyst promoter used in catalytic ammonia synthesis reaction?

K₂O
Al₂O₃
MnO
Cr₂O₃

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

Vanadium pentoxide
Alumina
Iron
Nickel

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Fertiliser Technology
Oxidation of ammonia is

Exothermic
Autocatalytic
Non-catalytic
Endothermic

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

Calcium phosphate
Ammonium phosphate
Phosphorous pentoxide
Phosphorous oxychloride

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

Endothermic
Irreversible
None of these
Exothermic

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Fertiliser Technology
Lower temperature and large excess of ammonia in urea melt

Decreases biuret formation
Increases biuret formation
Does not effect biuret formation
Is undersirable

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