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Fertiliser Technology

Fertiliser Technology
Catalyst used in the manufacture of NH₃ by Haber's process is finely divided

Iron
Vanadium pentoxide
Nickel
Alumina

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

Nitric acid
Ammonium nitrate
Nitric oxide
Ammonia

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Fertiliser Technology
5-10-5 fertilisers mean that they contain

Only 5 to 10% active fertiliser constituents
5, 10, 5% respectively of N₂, P₂O₅ and K₂O
None of these
5 to 10% filler & carrier of soil conditioners

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Fertiliser Technology
Conversion achieved in HNO₃ synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by

None of these
Decreasing the temperature
Increasing the temperature
Decreasing the pressure

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Fertiliser Technology
Vetrocoke solution is

A mixture of K₂CO₃ and As₂O₃
A mixture of Na₂CO₃ and As₂O₃
K₂SO₄
Na₂SO₄

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Fertiliser Technology
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces

Phosphorous
Superphosphate
Ammonium phosphate
Phosphoric acid

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