Rusting is _____. Options: 1) Electrolysis 2) Oxidation 3) Redox reaction (Oxidation and Reduction) 4) Reduction

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 Correct Answer: Redox reaction (Oxidation and Reduction)Rust is an iron oxide, usually red oxide formed by the redox reaction of iron and oxygen in the presence of water or air moisture. Several forms of rust are distinguishable both visually and by spectroscopy, and form under different circumstances. Rust consists of hydrated iron(III) oxides Fe2O3·nH2O and iron(III) oxide-hydroxide (FeO(OH), Fe(OH)3). 

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