Question

13. Complete the following:
In the anodizing process, a protective layer of is formed on the
surface of aluminium article. Anodizing is done by ___. Dilute acid
is taken in the electrolytic cell and the aluminium article is dipped in
it as the When an electric current is passed hydrogen gas is
released at the cathode and
gas is released at the anode
Aluminium oxide, spraying, anode, hydrogen
Aluminium oxide, electrolysis, anode, oxygen
Iron oxide, electrolysis, cathode, oxygen
Teflon, anodizing, anode, chlorine​

Answer 1

Explanation:

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