Question

Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because

• A. zinc has lower negative electrode potential than iron
• B. zinc has higher negative electrode potential than iron
• C. zinc is lighter than iron
• D. zinc has lower melting point than iron

Answer 1

The correct option is A zinc has lower negative electrode potential than iron

Zn and Fe both have a low tendency to get reduced. That is why the two have negative potential values (Assumed as reduction potential by standard).

But between the two, the one having a lower negative potential has a relatively higher tendency to get reduced.