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Fertiliser Technology

Fertiliser Technology
The main constituent of rock phosphate is

Mono-calcium phosphate
None of these
Di-calcium phosphate
Fluorspar

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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
Phosphoric acid
Phosphorous

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Fertiliser Technology
In the manufacture of urea, the intermediate chemical formed is

None of these
Biuret
Ammonium carbamate
Ammonium carbonate

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Fertiliser Technology
Heating of orthophosphoric acid to about 900°C, produces

None of these
Pyrophosphoric acid
No change in it
Metaphosphoric acid

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Fertiliser Technology
The essential ingradient of all the synthesis gas is

O₂
CO₂
H₂
N₂

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Fertiliser Technology
Leaching of phosphate rock by strong __________ acid produces phosphoric acid.

Either A or B
Hydrochloric
Neither A nor B
Sulphuric

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