Question:
In galvanised iron
In galvanised iron
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Zinc is the "Sacrificial Anode." It dies (corrodes) so the Iron can live (remain intact).
Updated On: May 5, 2026
- Zn acts as anode and Fe acts as cathode
- Zn acts as cathode and Fe acts as anode
- Sn acts as anode and Fe acts as cathode
- Sn acts as cathode and Fe acts as anode
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The Correct Option is A
Solution and Explanation
Step 1: Concept Galvanization is the process of coating iron with a layer of zinc to provide sacrificial protection.
Step 2: Meaning Zinc is more electropositive (has a lower reduction potential) than iron.
Step 3: Analysis In the presence of an electrolyte, Zinc undergoes oxidation (acting as the anode) and Iron remains protected (acting as the cathode).
Step 4: Conclusion Even if the zinc coating is scratched, the Zinc continues to corrode preferentially to protect the Iron.
Final Answer: (A)
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