Dihydrogen can be prepared on commercial scale by different methods. In its preparation by the action of steam on hydrocarbons, a mixture of CO and H2 gas is formed. It is known as ____________.

Water gas is nothing but a mixture of carbon monoxide (CO) and hydrogen (H2) gases.

The water shift gas reaction is used in the formation of synthesis gas (hydrogen and carbon monoxide or carbon dioxide mixture. Here CO is converted to CO2 and H2 is also obtained from water. The production of dihydrogen can be increased by reacting carbon monoxide of syngas mixtures with steam and using iron chromate as a catalyst.

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