Which of the following can produce hydrogen from water

Which of the following can produce hydrogen from water

Options

(a) Heated stannic oxide
(b) Heated iron
(c) Heated aluminium oxide
(d) Heated copper oxide

Correct Answer:

Heated iron

Explanation:

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  • Generally heated oxides do not react with H₂O to

    evolve H₂ gas. Only iron reacts 3 Fe + 4 H₂O (hot) - →→→→→Fe3O4 + 4 H₂

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