Q.

When iron is rusted, it is

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a

Oxidised

b

Reduced

c

Evaporated

d

Decomposed

answer is A.

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Detailed Solution

Fe(s)⟶Fe2++2e−(Oxidation )O2+4H⊕+4e−⟶2H2O (Reduction) Atmospheric oxidation: 2Fe2++2H2O+12O2⟶Fe2O3+4H⊕Rust is Fe2O3 . xH2OCorrosion or rusting occurs in the presence of water and air
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