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Question

What happens when water vapour is passed over a red hot iron?
  1. No reaction
  2. Hydrogen and Fe2O3 are produced
  3. Oxygen and Fe(OH)2 are produced
  4. Hydrogen and Fe3O4 are produced

A
No reaction
B
Oxygen and Fe(OH)2 are produced
C
Hydrogen and Fe3O4 are produced
D
Hydrogen and Fe2O3 are produced
Solution
Verified by Toppr

The reaction takes place as
3Fe+4H2OFe3O4+4H2
so, on passing water vapour over hot red iron we get hydrogen and Fe3O4.

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