Question

give the necessary condition for rusting of iron ​

Answer 1

Answer:

after sometime by air and water the iron get rusted by physical change

hope it works

Answer 2

Answer:

The two essential conditions of rusting iron are the presence of oxygen, and the presence of water whose PH level is slightly acidic. Grease coating can be given t prevent the iron from rusting as it blocks the oxygen and water to get in contact with the metal.