Question

What is the process of forming a thick oxide layer on aluminium called?

• A. Galvanisation
• B. Anodising
• C. Electrolysis
• D. Oxidation

Hint:

Anodising specifically enhances the oxide layer on aluminium.

Answer 1

The Correct Option is B

Step 1: Recall the natural oxide layer on aluminium.
Aluminium forms a thin protective oxide layer in air.
Step 2: Define the given processes.
Galvanisation:
Coating iron with zinc.
Anodising:
Electrochemical process to form a thick oxide layer on aluminium.
Electrolysis:
Using electricity to drive chemical reactions.
Oxidation:
Loss of electrons or increase in oxidation state (formation of oxide).
Step 3: Identify the specific process for a thick oxide layer on aluminium.
Anodising is the process used to create a thick, protective oxide layer on aluminium.