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Question

When steam is passed over red hot iron, the substances formed are:

A
Fe2O3+H2
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B
H2+FeO
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C
Fe3O4+H2
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D
Fe3O4+H2O
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Solution

The correct option is B Fe3O4+H2
When steam is passed over a red hot iron, the substances formed are Fe3O4+H2.

The reaction is as follows:
3Fe+4H2OFe3O4+4H2

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