Which of the following processes does not involve oxidation of iron

Options

(a) Decolourization of blue CuSO₄ solution by iron
(b) Formation of Fe(CO)₅ from Fe
(c) Lineration of H₂ from steam by iron at igh temperature
(d) Rusting of iron sheets

Correct Answer:

Formation of Fe(CO)₅ from Fe

Explanation:

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