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Fertiliser Technology

Fertiliser Technology
Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.

Endothermic
Non-catalytic
Exothermic
Autocatalytic

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Fertiliser Technology
Liquid ammonia is not used as such a fertiliser in tropical countries like India, because

It is very costly
It will evaporate on spraying
It is not available
Its N₂ content is very low

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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
Requires lower capital investment in the plant
Produces lower purity acid
Is very costly

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Fertiliser Technology
Reaction of calcium fluorapatite with sulphuric acid produces

Simple superphosphate
Ortho-phosphoric acid
Triple superphosphate
Red phosphorous

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Fertiliser Technology
Reaction of anhydrous liquid ammonia with orthophosphoric acid produces

Superphosphate
Triple superphosphate
None of these
Ammonium phosphate

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Fertiliser Technology
CO₂ present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in

Mono-ethanolamine (MEA)
Slaked lime
Methyl-Ethyl Ketone (MEK)
Ammoniacal liquor

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