Question

When iron article rusts, a reddish brown layer forms on it. A greenish layer is seen to form on a copper article. This process is called ____ of metals.
Options
1. Vapours
2. Galvanization
3. Corrosion​

Answer 1

Answer:

corrosion.3 is the process and especially in case of iron its called rusting

Answer 2

3.corrosion. copper that is exposed to the elements undergoes a series of chemical reactions that give the shiny metal a pale green outer layer called a patina.