Question

Aluminium is more reactive than iron yet there is less corrosion of aluminium as compared to iron when both are exposed to air.

Answer 1

Aluminum develops a protective layer of aluminum oxide by slowly reacting with oxygen present in air.

After this layer formation , air can't react with aluminum present,hence there is only less corrosion.

In compare , iron can't form protective layer hence it easily gets corroded.

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Answer 2

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