- Zinc is more electropositive/reactive than iron. - Zinc acts as a sacrificial anode, corroding instead of iron. - Provides protection even if the coating is scratched (galvanic protection).
Zinc is used to protect iron from corrosion because zinc is
Asked in UPSC NDA 2 2017 · Topic: Metals, Minerals, Ores: Properties, Uses (Corrosion of metals: causes, mechanism (rusting), and prevention methods (galvanization, anodizing, electroplating, alloying, painting))
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Answer: A. more electropositive than iron
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