how is the galvanised article protected against rusting even if the zinc coating is broken?
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Answer: The constant formation of aluminium oxide
Explanation:
GALVANIZATION : The process where the coating of aluminium is given through the process of electrolysis.
Even this layer is broken ,aluminium reacts with atmospheric oxygen, to reform the layer.
4Al + 3O₂ ⇒ 2Al₂O₃
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