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Corrosion of some metals is an advantage give reason to support your answer and give an example

Posted by Dark Shadow 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Raunak Chauhan 6 years, 3 months ago

Corrosion of some metal is good for other metal because due to corrosion a layer formed around the metal which the metal from corroride again with air .For example corrosion of copper from a green yellowish layet that protect the inner layer of the metal from the further corrosion.

2Thank You

Yogita Ingle 6 years, 3 months ago

Corrosion of some metals is an advantage-
Example: corrosion of aluminium is useful. Corrosion of Aluminium occurs when the metal is exposed to oxygen, according to the following reaction :
4 Al(s) + 3 O₂ (g) → 2 Al₂O₃(s)
Thus a protective layer of aluminium oxide is formed on the surface of the metal, which renders the metal passive and prevents its further corrosion.

2Thank You

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