Question

Why is zinc better than tin if we want to protect a piece of iron from rusting by electroplating?

A

Zinc is cheaper than tin.

B

Tin is toxic.

C

Rusting is prevented even when the zinc layer is broken.

D

None of these

Medium

Solution

verified
Verified by Toppr
Correct option is A)

When zinc coating is applied over iron, it undergoes sacrificial anode, an electrochemical process that acts as a physical barrier and protects the iron from corrosion.
But tin has susceptibility to abrasion and mechanical damage easily. Also, zinc is cheaper than tin.
Hence, option A is correct.

Was this answer helpful?

upvote 0
downvote0