Question

Which one of the following metals is protected from corrosion by a layer of its own oxide?

• A. Aluminium
• B. Copper
• C. Silver
• D. Gold

Hint:

Metals like aluminium are protected by a thin oxide layer, which prevents corrosion.

Answer 1

The Correct Option is A

- Aluminium forms a thin layer of oxide (Al\(_2\)O\(_3\)) on its surface, which protects it from further corrosion.
- This oxide layer is very stable and prevents the metal from reacting with air and water.
Thus, the correct answer is (A) Aluminium.