Anodising is a process used to improve the appearance and durability of aluminium articles. Which of the following statements best describes the principle of anodising?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) Aluminium is coated with zinc to prevent rusting.
2. (B) Aluminium is made the anode and oxidised to form a thick protective oxide layer.
3. (C) Aluminium is dipped in an alkali to increase its reactivity.
4. (D) Aluminium is made the cathode in electrolysis to reduce the oxide layer.

Verified Answer

Option (B): Aluminium is made the anode and oxidised to form a thick protective oxide layer.

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