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Fertiliser Technology

Fertiliser Technology
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces

Superphosphate
Phosphorous
Phosphoric acid
Ammonium phosphate

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Fertiliser Technology
Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction.

Catalytic
Reversible
Exothermic
Endothermic

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Fertiliser Technology
Maximum stability of white phosphorous is at

Atmospheric pressure
>600°C
Room temperature
Very high pressure

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Fertiliser Technology
Main component of bone ash is

Calcium phosphate
Calcium sulphate
Calcium carbonate
Sodium phosphate

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Fertiliser Technology
Catalyst used in Haber's process for ammonia production is

Nickel
Vanadium pentoxide
Reduced iron oxide
Silica gel

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Fertiliser Technology
Nitric acid is produced on commercial scale in a fertiliser plant by

None of these
CaNO₃ + H₂SO₄ reaction
Passing air through high voltage electric arc
Oxidation of ammonia

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