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Explain Why, the Galvanised Iron Article is Protected Against Rusting Even If the Zinc Layer is Broken. - Science

Explain why, the galvanised iron article is protected against rusting even if the zinc layer is broken.

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Solution

The galvanised iron-zinc oxide layer coating on iron objects prevents zinc and iron under it​ from corrosion. This happens because zinc is more reactive than iron. If the zinc layer is broken,​ zinc, being more reactive, gets oxidised before iron and prevents its corrosion.

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APPEARS IN

Lakhmir Singh Class 10 Chemistry (Science)
Chapter 3 Metals and Non-metals
Q 59.4 | Page 194
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