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Exceptions in Physical Properties

The galvanize...

Question

The galvanized article is protected against rusting even if the zinc coating is broken. Why?

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Solution

Zinc is more reactive than iron, and loses electrons more easily. The outer layer of zinc of any galvanizedmaterial, reacts with the atmospheric oxygen to form Zinc Oxide (ZnO), which is stronger thanZinc.

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Q. Assertion :Zinc is used in the galvanization of iron. Reason: Its coating on iron articles increases their life by protecting them from rusting.

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