Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because
A
zinc is lighter than iron
B
zinc has lower melting point than iron
C
zinc has lower negative electrode potential than iron
D
zinc has higher negative electrode potential than iron
Explanation
The reduction potential values are
E°Zn2+/Zn = – 0.76 V
E°Fe2+/Fe = – 0.44 V
Thus, due to higher negative electro potential value
of zinc than iron, iron cannot be coated on zinc.