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Why does an oiled iron object rust less?

Answer and explanation

Correct answer: The oil layer prevents iron from contacting oxygen and moisture

Rusting is an electrochemical corrosion process that needs iron, oxygen and water or moisture. The oil coating acts as a physical barrier, so air and moisture cannot easily reach the iron surface; consequently, the corrosion reaction becomes slower. Oil does not change iron into another metal, dissolve rust completely, or increase oxidation. Therefore, option A gives the correct prevention mechanism.

Related tags

ScienceClass10Chemical ReactionsCorrosionRusting PreventionChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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