Step-by-step explanation:
The following are the methods that can be used to prevent iron from rusting:
1. Galvanizing: Galvanizing is a method of protecting steel and iron from rust by coating them with a thin layer of zinc. Even if the zinc coating is broken, the galvanized object is protected from rust. To prevent rust, the water-carrying iron pipes in our houses are galvanized.
2. Varnishing: Varnishing is the method by which iron can be prevented from rusting. It prevents the direct interaction of iron with air and moisture.
Therefore, the two methods that can be used to prevent iron from rusting are galvanizing and painting