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Iron pipes are often coated with a layer of Zinc in order to prevent them from corrosion. This process is termed as:

1. electroplating
2. annealing
3. galvanization
4. vulcanization

Correct answer: galvanization

Solution

Coating iron or steel with zinc protects it from corrosion because zinc acts as a barrier and also corrodes preferentially. This zinc-coating process is called galvanization.

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