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In presence of which catalyst is H2 from water gas and steam extracted?

(a) Magnesium oxide

(b) Copper oxide

(c) Iron oxide

(d) Nickel

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I'm obligated to ask this question of Hydrogen : Production in section Hydrogenation of Unit Processes

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Right option is (c) Iron oxide

Explanation: In Bosch process, the carbon monoxide in the gas is made to react with steam in the presence of an iron oxide catalyst, and additional hydrogen along with carbon dioxide is obtained.

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