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In galvanisation, which metal is coated on iron or steel?

Answer and explanation

Correct answer: Zinc

In galvanisation, a thin layer of zinc is coated on iron or steel. This layer prevents air and moisture from reaching the iron, reducing rusting. Zinc is more reactive than iron, so it can oxidise preferentially and provide some protection even if the coating is scratched. Coating iron with copper is not called galvanisation.

Related tags

Class 10 ScienceChemical ReactionsGalvanisationZinc CoatingCorrosionRust Prevention

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