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Fertiliser Technology

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

Al₂O₃
MnO
Cr₂O₃
K₂O

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Fertiliser Technology
In the manufacture of H₃ PO₄ (ortho), ; strong H₂ SO₄ leaching wet process as compared to electric furnace process

Uses lower grade phosphate rock
Is very costly
Produces lower purity acid
Requires lower capital investment in the plant

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Fertiliser Technology
Chemical formula of metaphosphoric acid is

H₄P₂O₇
HPO₃
H₃PO₄
Same as that of pyrophosphoric acid

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Fertiliser Technology
Naphtha in a fertiliser plant is used as a source of

O₂
Fuel
H₂
N₂

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Fertiliser Technology
Reaction of nitric acid and sulphuric acid with phosphate rock produces

Tributyl phosphate
Nitrophosphate
Diammonium phosphate
Tricresyl phosphate

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Fertiliser Technology
Low grade coal is __________ to produce ammonia synthesis gas.

Dehydrogenated
Gasified
Hydrogenated
Liquefied

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