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:
Which of the following is/are necessary for rusting to take place ? | |||
| Right Option : B | |||
| View Explanation | |||
Silver article turns black after a period of time due to formating of _________________ | |||
| Right Option : B | |||
| View Explanation | |||
Two Statement are made Statement A : Zinc is used in the galvanization of iron Statement B : Its coating on Iron articles increasing the life of it by protecting it from rusting | |||
| Right Option : C | |||
| View Explanation | |||
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Cheshta
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