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Why is zinc coated on iron as galvanisation when zinc is more reactive than iron? |
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Answer» Answer: Galvanising is a method of RUST prevention. 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. |
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