What is the advantage of galvanized iron over painted iron.
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Advantage of galvanised iron over tin-plated iron is that galvanised iron does not rust even if there is scratch on the coating of zinc layer on iron surface.
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Galvanisation protects iron from rusting. Zinc corrodes and forms a layer of zincoxide on iron surface and thus stops air and water reaching the surface of iron. In tin plated iron if tin plate be scratched ,the iron will rust quickly.
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