Scrap steel is melted and added to the iron produced by a blast furnace. What effect does this have?
Less iron ore and less coke are needed for each tonne of steel
The iron that leaves the blast furnace contains no carbon at all
The blast furnace no longer needs a supply of hot air to work
The reduction of iron oxide by carbon no longer has to happen
40 exam-style questions on AQA GCSE Chemistry 10.2 Life cycle assessment and recycling, covering 10.2.1 Life cycle assessment and 10.2.2 Ways of reducing the use of resources. Each one has a worked solution and a mark scheme showing where the marks go.