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FERTILISER TECHNOLOGY

Fertiliser Technology
The main constituent of rock phosphate is

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

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Fertiliser Technology
The essential ingradient of all the synthesis gas is

N₂
CO₂
H₂
O₂

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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.

82
38
68
98

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

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

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