Corrosion

1. A metal that loses its shiny brown surface after coming in contact with moist carbon dioxide
3. A method in which the metal is coated with oil to prevent rusting
4. A method in which metal is coated with an oxide surface layer to prevent rusting
6. Silver articles become this after exposed to air
9. Iron acquires a coating of this when exposed to moist air
10. A metal that becomes black after being exposed to air
12. A method to protect steel and iron from rusting
14. A method in which the the metal is layered with the mixture of several metals to prevent rusting

1. A method in which the metal is electroplated with a thin layer of chromium
2. In the process of galvanization, the metal is coated with a thin layer of this
5. A method in the the metal is greased to prevent rusting
7. A process when iron interacts with moist air to form a coat of brown flaky substance on it
8. Copper reacts with moist carbon dioxide in air and gains a coat of this colour
11. A method in which paint is applied on the metal to prevent rusting
13. Homogeneous mixture of two or more metals, or a metal and a non metal