Question

Coolers are made of iron and kept outside but they still do not get rusted. Why?​

Answer 1

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Iron can be protected from rusting if it is in contact with a more reactive metal, such as zinc. The more reactive metal oxidises more readily than iron, so it 'sacrifices' itself while the iron does not rust. Once the sacrificial metal has corroded away, it can simply be replaced.

Answer 2

Answer:

While playing in your building compound, you might have come across an iron barbed wire which has turned red. You might have also seen some old metallic object at home. You would realise that these objects have turned reddish, unlike their original metallic colour. This is what we call rusting of iron.

Explanation:

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