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Prevention of Corrosion

Which of the ...

Question

Which of the following is/are disadvantages of galvanizing?
(i) Lasts a limited time
(ii) Easily killed off, used up by acids or water
(iii) Resistance to mechanical damage

A

iii

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B

i, ii

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C

ii, iii

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D

i, iii

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Solution

The correct option is C i, ii
Galvanization is protecting substance with coating a layer of zine.
$∴$ it last for limited time, till the coating is present and is easily affected by acid / water due to chemical reaction.

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