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How galvanised articles is protected against rusting even if zinc coating is broken ?

Posted by Rakesh Kumar 5 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Akhifa Sheik 5 years, 11 months ago

Zn is more reactive than Fe and can be oxidised easily. Therefore galvanised articles are protected against rusting even if Zn coating is broken.

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Akanksha Kumari? 5 years, 11 months ago

continue *coating

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Yogita Ingle 5 years, 11 months ago

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

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Akanksha Kumari? 5 years, 11 months ago

Galvanised articles are protected against rusting even if zinc continue is broken because zinc is more reactive than iron hence it reacts with oxygen in air and forms zinc oxide . This oxide layer prevents further rusting of iron article.

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CBSE > Class 10 > Science