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Q.

Rusting of iron is an example of_______.

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a

Reduction

b

Ionisation

c

Oxidation

d

Dissociation

answer is C.

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Detailed Solution

● When iron rusts, it oxidises to generate rust (

{Fe}_{2} O_{3} . \times H_{2} O

), a reddish brown substance.
● As a result of the rusting reaction, the oxidation state of iron increases, followed by the loss of electrons. Rust is made up of two different forms of iron oxides, each with a different oxidation state for the iron atom. Ferrous oxide or iron(II) oxide are the oxides. This compound has the chemical formula FeO and an oxidation state of +2.
● Iron(III) oxide, often known as ferric oxide, is a chemical with a +3 oxidation state for the iron atom. This substance's chemical formula is

{Fe}_{2} O_{3}

.

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