The galvanised articles are protected against rusting even if the zinc coating is broken, why?
pratyushssb:
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If the zinc coating is broken, the galvanised object remains protrcted against rusting because zinc is more reactive than iron and hence can be easily oxidized.
Thus, when zinc layer breaks down, the zinc continues to react and get oxidized. Hence iron object is protected
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It's actually due to oxidation. Oxidation takes place slowly so it's protected
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