Question
Write a note on corrosion.
✓
Answer
Metal gets corroded in the presence of acid and moisture. This process is called corrosion.
→ Rusting of iron, tarnishing of silver, green coating of salt on the utensils of copper are the examples of corrosion.
→ Due to corrosion, iron gets covered with a red brown substance (powder) which is called rusting of iron (or corrosion).
→ Corrosion causes damage to the articles (objects) made from iron such as car-bodies, bridges, iron railings, ships, etc. There is a huge expenditure to control corrosion.
→ Rusting can be prevented by painting the surface of iron or coating the surface of iron with more reactive metal (Zn).
→ Prevention of corrosion by coating iron surface with zinc is called galvanisation.
→ Rusting of iron, tarnishing of silver, green coating of salt on the utensils of copper are the examples of corrosion.
→ Due to corrosion, iron gets covered with a red brown substance (powder) which is called rusting of iron (or corrosion).
→ Corrosion causes damage to the articles (objects) made from iron such as car-bodies, bridges, iron railings, ships, etc. There is a huge expenditure to control corrosion.
→ Rusting can be prevented by painting the surface of iron or coating the surface of iron with more reactive metal (Zn).
→ Prevention of corrosion by coating iron surface with zinc is called galvanisation.
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