Which of the following methods is suitable for preventing an iron frying pan from rusting?

Give a reason to explain:
$(i)$ Why do aluminium sheets not corrode easily?
$(ii)$ Why is a copper vessel covered with a green coating in the rainy season?

$A$ metal $X$ acquires a green colour coating on its surface on exposure to air.
$(i)$ Identify the metal $X$ and name the process responsible for this change.
$(ii)$ Name and write the chemical formula of the green coating formed on the metal.
$(iii)$ List two important methods to prevent this process.

Galvanisation is a method of protecting iron from rusting by coating with a thin layer of :

Give a reason why electrical wires are coated with plastic.

State two ways to prevent the rusting of iron.