EXAMIANS
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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pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.
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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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Heating of orthophosphoric acid to about 900°C, produces
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Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil.
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In the manufacture of urea, the intermediate chemical formed is
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Urea is formed only
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Catalyst used in steam reforming of naphtha is
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Iron is not used alone as a catalyst in ammonia synthesis, because
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Out of the following, N₂ content is minimum in
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