Preventing rusting by galvanising
1 mark · NormalWhich statement best explains how galvanising prevents rusting of iron?
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Correct option: Zinc is more reactive than iron and corrodes first.
Common mistakes: Chooses 'barrier' statement; Chooses 'makes the iron heavier'
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Marking points
B1 · 1 mark · Chooses correct option: Zinc is more reactive than iron and corrodes first.
Worked solution
The correct answer is: Zinc is more reactive than iron and corrodes first.