Question

Why does the iron or steel object is protected even if the zinc coating is broken???

Answer 1

HERE YOUR ANSWER:

If the zinc coating is broken, the galvanised object remains protected against rusting because zinc is more reactive than iron and hence can be easily oxidised . Thus when zinc layer breaks down, the zinc continues to react and gets oxidised . Hence iron is protected.

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Answer 2

Explanation:

If the zinc coating is broken, the galvanised object remains protected against rusting because zinc is more reactive than iron and hence can be easily oxidised . Thus when zinc layer breaks down, the zinc continues to react and gets oxidised . Hence iron is protected.