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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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Why can sodium metal not be produced by reducing sodium oxide with carbon?
Which statement best describes a displacement reaction used to extract a metal from a solution of a less reactive metal?
A metal ore is reduced by passing hydrogen gas over the heated oxide. What type of reduction is this?
Metal ores are often oxides. Which process describes converting a metal oxide into the metal by removing oxygen using carbon?
Copper can be extracted from ores by reduction with carbon where appropriate. Which method is commonly used to extract copper from low-grade ores?
Why is carbon used to extract iron from iron(III) oxide in a blast furnace?
In displacement reactions used in extraction, what determines whether metal A will displace metal B from solution?
Which of the following best explains why aluminium is more expensive to produce than iron?
Which process describes removal of oxygen from a metal oxide by passing carbon monoxide over it (common in industrial extraction)?
Which statement about the thermite reaction (iron(III) oxide + aluminium) is correct in the context of metal extraction?
Which gas is produced when coke (carbon) reacts with oxygen in the blast furnace and then reduces iron oxide?