In galvanisation process zinc is coated on metals... but zinc is also a reactive metal..this zinc also can get rusted.. why this zinc metal does not get rusted???
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We can't say that zinc metal used in galvanisation doesn't get rusted instead it is used to protect the inner layer of metal which is galvanized .
Here the later of zinc is sacrificed to protect the inner layer of metal.
Here the later of zinc is sacrificed to protect the inner layer of metal.
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