Question

what would happen to iron railing on a roadside if they are not painted why does it happen​

Answer 1

Answer:

they will get rusted

Explanation:

because in presence of humidity and oxygen iron froms it's oxide that we call rust

Answer 2

Explanation:

If the iron railing on the road side is not painted, a brown rust would form on its surface because the moist air of the atmosphere reacts with iron to form brown flaky substance on its surface. The rust is hydrated iron (III) oxide, Fe203.xH20.

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