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Which of the following methods does not help protect iron from rusting?

Answer and explanation

Correct answer: Leaving iron exposed to moist air

Rusting requires iron to be in contact with both oxygen and moisture. Leaving iron exposed to moist air increases this contact and therefore promotes rusting. In contrast, paint and oil form protective barriers on iron, while galvanising coats iron with zinc to protect it from rusting.

Related tags

ScienceClass 10Chemical ReactionsRustingCorrosion PreventionGalvanisation

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