Question

Can corrosion of metal be an advantage explain

Answer 1

yes, it have many benefits:-
1. corrosion of aluminium utensils form a layer of aluminium oxide on it which stops further corrosion.
2. iron particles which fall on earth, get corroded and take form of rust which increase soil fertility.

Answer 2

Can corrosion of metal be an advantage? Explain.

Yes, in many ways:

[1] Surface corrosion forms an oxide layer which further protects the inner metal form corrosion.

[2] Some metals like zinc are used as sacrificial anodes to prevent corrosion to other metal.

[3] The principle on which primary batteries work.

In which one metal corrodes preferentially to another when both metals are in electrical contact, in the presence of an electrolyte.