alleryThe process of coating iron/steel articles with a thin layer of zinc to prevent rusting is called
AAlloying
BGalvanisation
CElectroplating with copper
DVulcanisation
Answer & Solution
Correct answer: B. Galvanisation
1. Rusting requires water and oxygen contact with iron.
2. Galvanisation coats iron with a zinc layer.
3. Even if the coating is scratched, zinc is more reactive than iron and gets oxidised first (sacrificial protection).
4. This protects the underlying iron effectively; used for pipes, buckets, wires.
_Source: syllabus Science, Ch 3 "Metals and Non-metals", §3.3_
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