Home Chemistry Electrochemistry All Topic Question for Revision Test Zinc can be coated on iron to produce galvan…
Chemistry Electrochemistry All Topic Question for Revision Test Single Correct MCQ
Published on: August 13, 2026

Zinc can be coated on iron to produce galvanised 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

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Text Solution

Verified by Experts
The correct answer is:
D

Here, in galvanised iron, Zn has higher negative reduction potential means Zn takes electrons given by iron and itself gets reduced. Thus, Zn works as anode and protects iron from rusting by making iron as cathode.

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