Question

Explain how painting of an iron gate prevents it form rustling?

Answer 1

the iron gate prevent it from rusting by applying paint on the gate

Answer 2

Answer:

Painting of an iron gate prevents it from rusting by preventing the contact of iron with the oxygen present in the atmosphere.

If we don't paint the iron gate , iron will react with the oxygen present in the atmosphere to form ferric oxide which is reddish brown in color. This oxidation of iron is also known as Rusting.

$4Fe(s)+3O_2(g)\rightarrow2Fe_2O_3(s)\text{reddish brown}$