Chemistry · Corrosion and Prevention
Iron nails are coated with zinc to prevent rusting. Even if the zinc layer is scratched, rusting does not occur because:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Zinc reacts with moisture to form a protective film.
- 2Zinc acts as a sacrificial anode and corrodes instead of iron.✓
- 3Iron becomes stainless in the presence of zinc.
- 4Zinc forms a hard oxide layer.
Correct answer
Zinc acts as a sacrificial anode and corrodes instead of iron.
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