Aluminium is extracted from its oxide by electrolysis.
The oxide is dissolved in ……1…… cryolite and aluminium is deposited at the ……2……
Which words correctly complete gaps 1 and 2?
1 )
1: aqueous / 2: cathode
2 )
1: aqueous / 2: anode
1: molten / 2: cathode
4 )
1: molten / 2: anode
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