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The protection of steel by chrome platin...

The protection of steel by chrome plating is due to

A

Cathodic protection

B

Anodic protectio

C

Covering of steel surface

D

Formation of alloy with iron

Text Solution

Verified by Experts

The correct Answer is:
A
The standard reduction potential of chromium is more negative than iron. So when Fe and Cr are in contact with each other, Fe becomes cathode and Cr becomes anode. This way chromium protects the steel from oxidizing. This is called cathodic protection.
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