(B) Galvanisation is a metallurgical process used to prevent the corrosion of iron or steel.In this process,a protective layer of $Zinc$ is applied to

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(B) Galvanisation is a metallurgical process used to prevent the corrosion of iron or steel.In this process,a protective layer of $Zinc$ is applied to the surface of the iron.$Zinc$ is more reactive than iron,so it acts as a sacrificial anode,corroding in preference to the iron and thereby protecting the underlying metal from rusting.