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Question
A to F below relate to the source and extraction of either zinc or aluminium.
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
Fill in the blanks using the most appropriate words from A to F:
(i) The ore from which aluminium is extracted must be treated with ______ so that pure aluminium oxide can be obtained.
(ii) Pure aluminium oxide is dissolved in ______ to make a conducting solution.
Solution
(i) The ore from which aluminium is extracted must be treated with Sodium hydroxide solution so that pure aluminium oxide can be obtained.
(ii) Pure aluminium oxide is dissolved in Cryolite to make a conducting solution.
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