Choose the correct option from the bracket and explain the statement giving reason:
(oxidation, displacement, electrolysis, reduction, zinc, copper, double, displacement, decomposition )
To prevent rusting,a layer of ___metal is applied on iron sheets

Explanation

To prevent rusting, a layer of zinc metal is applied on iron sheets. Zinc is more reactive than iron. Hence, when a layer of zinc is applied on iron sheets, it will undergo corrosion instead of iron. Thus, zinc prevents rusting ( corrosion) of iron.