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Fertiliser Technology

Fertiliser Technology
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about

20
6
13
2

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Fertiliser Technology
Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of

Superphosphate
Triple superphosphate
Phosphorous
Phosphoric acid

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Fertiliser Technology
Dehydration of ammonium carbamate produces

Ammonia water
Biuret
Urea
None of these

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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.

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

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Fertiliser Technology
Nitrolime is chemically known as

Calcium ammonium nitrate (CAN)
None of these
Ammonium nitrate
Calcium nitrate

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

None of these
Pyro
Meta
Ortho

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