Iron is galvanised when it is dipped in :

molten zinc

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molten copper

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molten carbon

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molten gold

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Solution

The correct option is A molten zinc
It is the process of coating iron and steel with a layer of zinc by immersing the metal in a bath of molten zinc at a temperature of around 840°F (449°C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen ( $O_{2}$ ) to form zinc oxide (ZnO) and this prevents the corrosion of iron and steel.

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