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Which method most directly prevents iron from coming into contact with air and moisture, thereby protecting it from rusting?

Answer and explanation

Correct answer: Coating iron with paint

Rusting requires contact between iron, oxygen, and water or moisture. Painting iron creates a continuous protective coating that separates the metal surface from air and moisture, so option B is correct. Leaving the metal exposed or placing it in moisture increases contact with the necessary reactants. Scratching can remove protection and expose fresh iron, making corrosion more likely rather than preventing it.

Related tags

ScienceClass 10CorrosionRustingProtective CoatingChemical ReactionsChemical Reactions And EquationsChemical Substances – Nature And Behaviour

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