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Fertiliser Technology

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

O₂
Fuel
N₂
H₂

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Fertiliser Technology
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.

500-750
250-300
1400-1450
950-1050

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Fertiliser Technology
Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by

Electrolysis of water
All of these
Steam reforming of naphtha and cracking of natural gas
Cryogenic separation of hydrogen from coke oven gas

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Fertiliser Technology
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

All of these
Stabilisation
Improving the strength & heat resistance
Increasing the effectiveness

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Fertiliser Technology
Reaction of orthophosphoric acid with phosphate rock produces

Triple superphosphate
Superphosphate
Metaphosphoric acid
Monoammonium phosphate

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Fertiliser Technology
NPK fertiliser is a __________ fertiliser.

Mixed
Phosphatic
Nitrogenous
Complex

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