Which of the following reasons can be attributed to prevention of rusting by zinc coating?

Zinc acts as cathode

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Zinc acts as anode

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Iron acts as anode

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Both (a) and (c)

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Solution

The correct option is B Zinc acts as anode
Galvanisation, is the process of applying a protective zinc coating to steel or iron to prevent rusting. The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.

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