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FERTILISER TECHNOLOGY

Fertiliser Technology
The main constituent of rock phosphate is

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

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Fertiliser Technology
The essential ingradient of all the synthesis gas is

O₂
H₂
N₂
CO₂

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

None of these
Ammonium carbonate
Ammonium carbamate
Biuret

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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

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

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