Fertiliser Technology - Chemical Engineering Questions and Answers

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The main constituent of rock phosphate is

Mono-calcium phosphate

Di-calcium phosphate

Fluorspar

None of these

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The essential ingradient of all the synthesis gas is

H₂

O₂

CO₂

N₂

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In the manufacture of urea, the intermediate chemical formed is

Biuret

Ammonium carbamate

Ammonium carbonate

None of these

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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.

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

Increase its nitrogen content

Cut down its production cost

Avoid the risk of explosion

Add extra nutrient as fertiliser

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Ammonium sulphate can be produced by reacting gypsum with

Ammonia

Ammonium carbonate

Nitric acid

None of these

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P₂O₅ percentage in the phosphoric acid produced by wet process is about

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Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and

Nitric acid

Ammonia

Ammonium nitrate

Nitric oxide