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Extraction Of Metals And Reduction (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Extraction Of Metals And Reduction' from the broader topic Chemical Changes. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which half-equation shows reduction at the cathode during electrolysis of molten aluminium oxide?
In the electrolysis of molten metal halides to extract a metal, why must the product metal be kept separate from the halogen gas produced at the anode?
What is the main purpose of flux (e.g., limestone) in a smelting furnace?
Which environmental concern is most directly associated with using coke (carbon) as the reducing agent in large-scale metal extraction?
Limestone (calcium carbonate) is added to the blast furnace. What is its main purpose?
Which process describes removal of oxygen from a metal oxide by passing carbon monoxide over it (common in industrial extraction)?
Why can sodium metal not be produced by reducing sodium oxide with carbon?
Why is electrorefining used after initial extraction for some copper?
Which of the following best explains why aluminium is more expensive to produce than iron?
Which metal is commonly extracted from its oxide by heating with carbon rather than by electrolysis due to cost and reactivity?
Which gas is produced when coke (carbon) reacts with oxygen in the blast furnace and then reduces iron oxide?