Question 30
EasyOriginal questionGalvanised iron buckets and roofing sheets are iron coated with a thin layer of
Show the answer and explanation
CorrectNot quiteAnswer D
Correct answer: D
Explanation
Galvanisation means coating iron or steel with zinc.
Zinc is more reactive than iron, so even if the coating is scratched, the zinc corrodes first and protects the iron.
Worth noting
Tin plating is used on food cans, and chromium plating on taps and bicycle handles; neither is galvanising.
- Concept
- Galvanisation
- Typical timeTypical
- 35 s
- Your timeYours
- —
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