Single Answer MCQ
Q-00040009
Why does galvanisation protect iron even if the zinc coating is damaged?
1
Zinc is more reactive than iron.
2
Zinc absorbs moisture.
3
Zinc is a poor conductor of electricity.
4
Zinc forms a protective layer of lead.
Answer and Solution
Answer
A. Zinc is more reactive than iron.
Solution:
Zinc is more reactive than iron, so even if the zinc coating is damaged, it will corrode first, preserving the underlying iron from rusting.
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