Extracting metals from their ores
1 mark · NormalWhich statement correctly explains why aluminium is extracted from its ore by electrolysis?
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Correct option: Aluminium is more reactive than carbon.
Common mistakes: Choosing 'less reactive than carbon'
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Marking points
A1 · 1 mark · Chooses correct option: Aluminium is more reactive than carbon.
Worked solution
Aluminium is extracted by electrolysis because it is more reactive than carbon, so it cannot be displaced by carbon.