Fewpal
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How can the production of dihydrogen, obtained from ‘coal gasification’, be increased? 

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Dihydrogen is produced by coal gasification method as: 

The yield of dihydrogen (obtained from coal gasification) can be increased by reacting carbon monoxide (formed during the reaction) with steam in the presence of iron chromate as a catalyst. 

This reaction is called the water-gas shift reaction. Carbon dioxide is removed by scrubbing it with a solution of sodium arsenite. 

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