Zinc can be extracted from zinc oxide in a furnace. Three of the reactions in the furnace are shown.
Reaction 1: 2C+O2→2CO\mathrm{2C + O_{2} \rightarrow 2CO}2C+O2→2CO
Reaction 2: ZnO+CO→Zn+CO2\mathrm{ZnO + CO \rightarrow Zn + CO_{2}}ZnO+CO→Zn+CO2
Reaction 3: CO2+C→2CO\mathrm{CO_{2} + C \rightarrow 2CO}CO2+C→2CO
Statement 1: Carbon is reduced in reaction 1.
Statement 2: Carbon dioxide is reduced in reaction 3.
Statement 3: Carbon monoxide is oxidised in reaction 2.
Which statements are correct?
2 only
1 and 2 only
2 and 3 only
1, 2 and 3
53 exam-style questions on OCR GCSE Chemistry 3.3 Types of chemical reactions, covering 3.3.1 Oxidation and reduction in terms of oxygen, 3.3.2 Acids, alkalis and neutralisation, 3.3.3 The pH scale and measuring pH, 3.3.4 Oxidation and reduction in terms of electrons, 3.3.5 Dilute and concentrated, weak and strong acids, and 3.3.6 Hydrogen ion concentration and pH. Each one has a worked solution and a mark scheme showing where the marks go.