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Zinc is used to protect iron from corrosion because zinc is
more electropositive than iron
cheaper than iron
a bluish white metal
a good conductor of heat and electricity
The iron or steel object is coated in a thin layer of zinc. This stops oxygen and water reaching the metal underneath - but the zinc also acts as a sacrificial metal. Zinc is more reactive than iron, so it oxidises in preference to the iron object.
By: Munesh Kumari ProfileResourcesReport error
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