Corrosion and its Prevention
Corrosion and its Prevention
Corrosion:
Iron and many other metals react with oxygen and moisture present in the atmosphere. This phenomenon is called corrosion. The process of slow eating away of a metal due to the attack of atmospheric gases and moisture on its surface is called corrosion.
• Iron reacts with oxygen and moisture present in the atmosphere to form a brown, flaky substance called rust. Rusting of iron in an undesirable reaction because the layer of rust formed falls off, exposing the metal to further rusting.
Prevention of rusting:
Both air and water are needed together to rust the iron. The only way to prevent iron from rusting is to keep air and water away from it. It can be done by:
The metal which is not corroded by air, water and acids is __________________ | |||
| Right Option : D | |||
| View Explanation | |||
Eating away of metal by water, oxygen and other chemicals is called _______________ | |||
| Right Option : D | |||
| View Explanation | |||
Iron is galvanized when it is dipped in ______________ | |||
| Right Option : A | |||
| View Explanation | |||
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