alleryGalvanisation, the coating of iron with a thin layer of another metal to prevent rusting, uses:
ATin
BMagnesium
CAluminium
DZinc
Answer & Solution
Correct answer: D. Zinc
1. Iron is COATED with ZINC to prevent corrosion.
2. Zinc is more reactive than iron; it corrodes preferentially (sacrificial protection).
3. Even if the zinc layer is scratched, zinc nearby continues to protect the iron.
_Source: syllabus Science Ch 1 §1.4 Corrosion and its Prevention_
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