Q. 36 B4.1( 8 Votes )

Explain why, though aluminium is more reactive than iron, yet there is less corrosion of aluminium when both are exposed to air.

Answer :

Though aluminium is more reactive than iron, yet there is less corrosion of aluminium when both are exposed to air because, there is less corrosion in aluminium than iron when both are exposed to air because aluminium forms a layer of aluminium oxide on its surface as soon as it comes in contact with moist air. This aluminium oxide is very tough and prevents it from corroding right through.

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