The process of coating iron/steel articles with a thin layer of zinc to prevent rusting is called
A{'text': 'Alloying', 'label': 'A'}
B{'text': 'Galvanisation', 'label': 'B'}
C{'text': 'Electroplating with copper', 'label': 'C'}
D{'text': 'Vulcanisation', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'Galvanisation', 'label': 'B'}
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: NCERT Class 10 Science, Ch 3 "Metals and Non-metals", §3.3_
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