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Fertiliser Technology

Fertiliser Technology
Dehydration of ammonium carbamate to yield urea is a/an __________ reaction.

Autocatalytic
Exothermic
Catalytic
Endothermic

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Fertiliser Technology
Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at

Baroda (under G.S.F.C.)
Sindri (under FCI)
Bokaro (under SAIL)
Rourkela (under SAIL)

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Fertiliser Technology
Urea is represented as

NH₂.CO.NH₂
NH₃.CO₂.NH₃
NH.CO₂.NH
NH₃CO.CH₃

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Fertiliser Technology
Raw materials for urea production are

NH₃ and CO
CO₂ and N₂
HNO₃ and CaCO₃
CO₂, H₂ and N₂

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Fertiliser Technology
Low grade phosphate rock can be used in electrical furnace, because

It is cheap
CaO content is less
It produces low cost product
Of the better CaO/SiO₂ balance for slag formation

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Fertiliser Technology
In ammonia synthesis (N₂ + 3H₂ = 2NH₃), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at

Very high temperature
Low pressure
Atmospheric pressure; as the pressure has no effect on conversion
High pressure

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