What type of chemical reaction is involved in the corrosion of iron?

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Solution

The corrosion of the iron is a type of Oxidation reaction. Oxidation reactions are the reactions in which the substances combine with oxygen gas to form metal oxides.

Corrosion is the deterioration of metal due to the presence of atmospheric oxygen and moisture. The metal surface reacts with atmospheric oxygen and moisture to form metal oxide.

The chemical reaction involved in the corrosion of iron is oxidation
$4 F e + 3 O_{2} x H_{2} O (m o i s t u r e) - --------- \to 2 F e_{2} O_{3} . x H_{2} O (R U S T)$

Here, Fe is oxidized.

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The chemical reaction involved in the corrosion of iron metal is that of :

(a) oxidation as well as displacement (b) reduction as well as combination

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