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FERTILISER TECHNOLOGY

Fertiliser Technology
The main constituent of rock phosphate is

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

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Fertiliser Technology
The essential ingradient of all the synthesis gas is

O₂
CO₂
N₂
H₂

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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
During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH₃ to NO is about __________ percent.

68
82
98
38

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Fertiliser Technology
Ammonium nitrate (a fertiliser) is coated with limestone powder to

Increase its nitrogen content
Avoid the risk of explosion
Add extra nutrient as fertiliser
Cut down its production cost

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