EXAMIANS
Low grade coal is __________ to produce ammonia synthesis gas.
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Heating of orthophosphoric acid to 250°C produces
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Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?
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In the manufacture of urea, the intermediate chemical formed is
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Urea is represented as
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Action of phosphoric acid on rock phosphate produces
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The composition of fresh feed to the high temperature, high pressure urea autoclave is
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Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of
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Ammonia synthesis gas is produced from natural gas by
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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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