Which two metals do not corrode easily?

CBSE Class 10 CBSE Class 10 Science
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1

Which two metals do not corrode easily? Give an example in each case to support that

  1. corrosion of some metals is an advantage.
  2. Corrosion of some metals is a serious problem.

Answer:

Gold and platinum.

  1. A thin impervious layer of aluminium oxide forms a protective layer which protects the aluminium metals underneath from further damage.
  2. Corrosion of iron is a serious problem. Every year enormous amount of money is spent to replace damaged iron and steel structures.