Zinc is coated over ion iron to prevent rusting of iron because :

Options

A. it is cheaper than iron
B. `E_((Zn^(2+)//Zn))^(@) = E_((Fe^(2+)//Fe))^(@)`
C. `E_((Zn^(2+)//Zn))^(@) lt E_((Fe^(2+)//Fe))^(@)`
D. `E_((Zn^(2+)//Zn))^(@) gt E_((Fe^(2+)//Fe))^(@)`

Answer

C