Organic chemistry: past paper questions

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• Question 34May/June 2026, paper 11Multiple choice1 mark

  The structures of four different organic compounds are shown. How many different homologous series are represented by these compounds?

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• Question 27Oct/Nov 2025, paper 11Multiple choice1 markHas a diagram

  What is the structure of ethanol?

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• Question 17Oct/Nov 2024, paper 11Multiple choice1 mark

  Which statements about dilute ethanoic acid are correct?

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• Question 32Oct/Nov 2023, paper 11Multiple choice1 markHas a diagram

  The structures of three organic molecules are shown. Which description of the three molecules is correct?

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• Question 35May/June 2026, paper 11Multiple choice1 markHas a diagram

  The names of organic compounds with seven carbon atoms in a chain start with ‘hept’. What is the name of this compound?

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• Question 28Oct/Nov 2025, paper 11Multiple choice1 mark

  Which statement about alkanes is correct?

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• Question 34Oct/Nov 2024, paper 11Multiple choice1 markHas a diagram

  Petroleum is an important raw material that is separated into useful products. Which terms describe petroleum and the method used to separate it?

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• Question 33Oct/Nov 2023, paper 11Multiple choice1 markHas a diagram

  Petroleum is separated into fractions by fractional distillation. Which row describes a use of the named fraction?

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• Question 36May/June 2026, paper 11Multiple choice1 mark

  Natural gas is a combustible gas that is a mixture of simple hydrocarbon compounds. Which substance is the main constituent of natural gas?

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• Question 30Oct/Nov 2025, paper 11Multiple choice1 mark

  Which group of compounds have the same general formula?

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• Question 35Oct/Nov 2024, paper 11Multiple choice1 mark

  Which statements about homologous series are correct?

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• Question 31Oct/Nov 2025, paper 11Multiple choice1 markHas a diagram

  Some fractions obtained from petroleum are listed.

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• Question 36Oct/Nov 2024, paper 11Multiple choice1 markHas a diagram

  The formulae of two organic compounds, P and Q, are shown.

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• Question 37Oct/Nov 2023, paper 11Multiple choice1 markHas a diagram

  Which diagram shows the displayed formula of ethanol?

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• Question 38May/June 2026, paper 11Multiple choice1 mark

  Which statements are correct?

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• Question 32Oct/Nov 2025, paper 11Multiple choice1 mark

  Four different substances or types of substance are listed. 1 hydrogen 2 alcohols 3 alkenes 4 carboxylic acids Which substances are produced by cracking larger alkane molecules?

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• Question 37Oct/Nov 2024, paper 11Multiple choice1 mark

  Which fuel is manufactured by fermentation?

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• Question 38Oct/Nov 2023, paper 11Multiple choice1 mark

  Ethane is used as a fuel. Which equation shows the complete combustion of ethane?

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• Question 31May/June 2026, paper 12Multiple choice1 mark

  Ethane, ethene, ethanol and ethanoic acid are all organic compounds. Which compounds are hydrocarbons?

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• Question 33Oct/Nov 2025, paper 11Multiple choice1 markHas a diagram

  Which row shows the conditions used to manufacture ethanol from ethene and steam?

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• Question 38Oct/Nov 2024, paper 11Multiple choice1 mark

  Which statement about the disposal of waste plastics is correct?

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• Question 8Oct/Nov 2023, paper 12Multiple choice1 markHas a diagram

  The diagram shows the structure of a molecule of ethyl ethanoate. What is the molecular formula of a molecule of ethyl ethanoate?

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• Question 32May/June 2026, paper 12Multiple choice1 markHas a diagram

  Gas oil and naphtha are two fractions obtained from petroleum. What are uses of these fractions?

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• Question 34Oct/Nov 2025, paper 11Multiple choice1 mark

  Which statement about aqueous ethanoic acid is correct?

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• Question 33Oct/Nov 2024, paper 12Multiple choice1 mark

  What are the products formed when glucose is fermented?

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• Question 34Oct/Nov 2023, paper 12Multiple choice1 markHas a diagram

  Which diagram shows the displayed formula for the named organic compound?

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• Question 33May/June 2026, paper 12Multiple choice1 mark

  Four different fuels are listed. 1 ethanol 2 petroleum 3 hydrogen 4 natural gas Which fuels are fossil fuels?

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• Question 35Oct/Nov 2025, paper 11Multiple choice1 markHas a diagram

  The equation represents a polymerisation reaction. $$n{\text{CH}}_2={\text{CH}}_2\to \text{—}[\text{—}{\text{CH}}_2-{\text{CH}}_2\text{—}{]}_n\text{—}$$ Which statements are correct?

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• Question 34Oct/Nov 2024, paper 12Multiple choice1 markHas a diagram

  Which structure represents a molecule of ethanol?

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• Question 35Oct/Nov 2023, paper 12Multiple choice1 mark

  Poly(ethene) is formed from petroleum using three separate processes. In which order are the processes used?

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