Rusting is an undesirable change. Justify this statement.
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Rusting is a chemical reaction. Iron reacts with moisture in the air and forms an oxide of iron which is called iron (III) oxide or ferric oxide (Fe2O3). The iron object looses its strength after it gets rusted. So it is an undesirable change.
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Yes indeed, Rusting forms when iron gets in contact with water and oxygen.
It is undesirable because after rusting takes place , rusting slowly begins to eat away the iron after which that particular iron cannot be used again for the purposes it was used before.
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