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FERTILISER TECHNOLOGY QUIZ

Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

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Lower temperature and large excess of ammonia in urea melt

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HPO₃ is the chemical formula of __________ phosphoric acid.

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pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.

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

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

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Oxidation of ammonia is

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In ammonia synthesis (N₂ + 3H₂ = 2NH₃), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at

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Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha?

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Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

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