Question

Corrosion of metal is always harmful ,illustrate?​

Answer 1

Answer:

Corrosion of metals is harmful as it destroys the metals but in the case of aluminium, it is useful as when aluminium gets corroded, the corroded layer acts as a protective layer which protects aluminium. The process us known as oxidation of aluminium.....

Explanation:

Answer 2

Answer:

Corrosion of metals is harmful as it destroys the metals but in the case of aluminium, it is useful as when aluminium gets corroded, the corroded layer acts as a protective layer which protects aluminium. The process us known as oxidation of aluminium