Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because
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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
answer is D.
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Detailed Solution
Reduction potential values ofEZn2+/Zn°=-0.76 V and EFe2+/Fe°=-0.44 VThus, due to higher negative electrode potential value of zinc than iron, iron cannot be coated on zinc.