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3.3 Types of chemical reactions

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Question 1
F

Iron is extracted from iron oxide in a blast furnace.

Fe2O3+3CO→2Fe+3CO2 \mathrm{Fe_{2}O_{3} + 3CO \rightarrow 2Fe + 3CO_{2}} Fe2​O3​+3CO→2Fe+3CO2​

Which statement identifies the substance that is oxidised and the substance that is reduced?

[1]
A

Carbon monoxide is oxidised and iron is reduced.

B

Carbon monoxide is oxidised and iron oxide is reduced.

C

Iron oxide is oxidised and carbon monoxide is reduced.

D

Carbon dioxide is oxidised and iron oxide is reduced.

Markscheme

3.3 Types of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Types of chemical reactions

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.

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