Question

How do iron rusts ? Does it rusts when lime water is spread on it ?

Answer 1

Answer:

Rusting of Iron

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.

Certain metallic objects develop changes on its surface. Being left stagnant for long or kept unused is the cause for this to happen. This is Corrosion. Corrosion consequently leads to gradual degradation of metals. Rusting is one of the ways of corrosion in metals. It happens to Iron and its Alloys. Iron objects consequently react with the Oxygen in the air and get rusted in a humid environment. Rust is Iron Oxide.