Q.

Rusting of iron takes place due to –

A. oxidation
B. carbonation
C. exfoliation
D. corrosion
Answer» A. oxidation
Explanation: The rusting of iron is an electrochemical process that begins with the transfer of electrons from iron to oxygen. The rate of corrosion is affected by water and accelerated by electrolytes, as illustrated by the effects of road salt on the corrosion of automobiles. When impure (cast) iron is in contact with water, oxygen, or other strong oxidants, or acids, it rusts.
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