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:
Iron is shiny gray initially but after some time forms the layer of hydrated Iron (III) oxide in the presence of _____________________ | |||
| Right Option : B | |||
| View Explanation | |||
An element which is covered with an inert layer when exposed to atmosphere,which stops its corrosion is _________________ | |||
| Right Option : B | |||
| View Explanation | |||
What is the colour of the coating formed on the Copper when it react with moist carbon dioxide ? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [20]
We started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
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8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
