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Fertiliser Technology

Fertiliser Technology
Ammonia synthesis reaction is

Exothermic
Autocatalytic
None of these
Endothermic

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

CaO content is less
It is cheap
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

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

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Fertiliser Technology
H₄P₂O₇ is the chemical formula of __________ phosphoric acid.

Meta
Pyro
Ortho
None of these

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Fertiliser Technology
Action of phosphoric acid on rock phosphate produces

Nitrophosphate
Superphosphate
Triple superphosphate
Diammonium phosphate

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Fertiliser Technology
Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH₃

CO₂ & H₂SO₄
HNO₃ & NH₄Cl
CO₂ & KNO₃
HNO₃ & limestone

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