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:
Silver articles become _________________ after some time when exposed to air. | |||
| Right Option : A | |||
| View Explanation | |||
Iron is galvanized when it is dipped in ______________ | |||
| Right Option : A | |||
| View Explanation | |||
This metal's latin name is "Ferrum" and it is a magnetic, malleable and silvery-white metal. It was used to make ornaments and weapons. When exposed to moist air, it oxidises to from rust. Identify the metal. | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
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Yatharthi Sharma
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
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Manish Kumar
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Aman Kumar Shrivastava
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Eshan Arora
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
