Zine can be coated on iron to produce galvanize3d iron but the reverse is not possible it is because

Options

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

Answer

d

Explanation

A metal with more negative electrode potential is more easily oxidised than a meta with less negative electrode potential thus zinc with `E^(@)=-0.76 V` is more easily oxidised by `O_(2)` and moisture of the atmosphere than iron with `E^(@)=-0.44 V` and thus protects iron from corrosion with les -ve electrode potential cannot protect zinc with more ve electrode potential from corrosion