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Fertiliser Technology

Fertiliser Technology
Hydrogen content of coke oven gas is __________ percent.

4
58
84
22

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Fertiliser Technology
Superphosphate is manufactured by reacting phosphate rock with

Acetic acid
None of these
Aluminium chloride
Sulphuric acid

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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
High pressure
Atmospheric pressure; as the pressure has no effect on conversion

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Fertiliser Technology
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium

Carbonate
Silicate
Bicarbonate
Phosphate

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Fertiliser Technology
Reaction of phosphate rock with 98% H₂SO₄ produces

Orthophosphoric acid
White phosphorous
Superphosphate
None of these

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Fertiliser Technology
Main constituent of phosphate rock is

Calcium phosphate
Ammonium phosphate
Calcium fluoride
Flour apatite

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