- It is a process of forming a thick oxide layer of aluminium.
- The aluminium oxide coat makes it resistant to further corrosion.
- It is electrolysed with dilute hydrochloric acid.
Answer: Only 1 and 2
Notes: Anodising is the process of forming a thick oxide layer on aluminium to enhance corrosion resistance. The protective aluminium oxide layer prevents further corrosion. Anodising involves electrolysis using dilute sulphuric acid, not hydrochloric acid. Thus, statements 1 and 2 are correct, while statement 3 is incorrect.
