Iron is extracted using the reaction 2Fe2O3+3C→4Fe+3CO22\text{Fe}_2\text{O}_3 + 3\text{C} \rightarrow 4\text{Fe} + 3\text{CO}_22Fe2O3+3C→4Fe+3CO2. Which substance is reduced in this reaction?
Carbon
Iron
Iron oxide
Carbon dioxide
39 exam-style questions on AQA GCSE Chemistry 4.1 Reactivity of metals, covering 4.1.1 Metal oxides, 4.1.2 The reactivity series, 4.1.3 Extraction of metals and reduction, and 4.1.4 Oxidation and reduction in terms of electrons. Each one has a worked solution and a mark scheme showing where the marks go.