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Isomerism: structural isomerism and stereoisomerism: CAIE A‑Level Chemistry questions

Every CAIE A-Level Chemistry exam question on 13.4 Isomerism: structural isomerism and stereoisomerism, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

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312 questions

  1. Q8(a)(i)

    June 2024 · Paper 4

    1 mark13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    June 2024 Paper 4, question 8(a)(i): State the number of chiral carbon atoms in a molecule of neotame. [1]

  2. Q25

    June 2024 · Paper 1

    1 mark13.4 Isomerism: structural isomerism and stereoisomerism14.2 Alkenes
    The whole paper ↗
    June 2024 Paper 1, question 25: Structural isomerism and stereoisomerism should be taken into account when answering this question. The structure of 3-methylcyclobutene is shown. 3-methylcyclo

  3. Q32

    June 2024 · Paper 1

    1 mark16.1 Alcohols13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    June 2024 Paper 1, question 32: Compound X is a single, pure, optical isomer. Compound X is heated with an excess of concentrated H2SO4. Only one organic product is formed. What is compound X?

  4. Q6(a)(i)

    June 2024 · Paper 2

    1 mark13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    June 2024 Paper 2, question 6(a)(i): Explain what is meant by stereoisomerism. [1]

  5. Q6(a)(ii)

    June 2024 · Paper 2

    2 marks13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    June 2024 Paper 2, question 6(a)(ii): Deduce the number of stereoisomers of V. Explain your reasoning. [2]

  6. Q25

    Specimen · Paper 1

    1 mark13.4 Isomerism: structural isomerism and stereoisomerism16.1 Alcohols
    The whole paper ↗
    Specimen Paper 1, question 25: Structural isomerism and stereoisomerism should be considered when answering this question. Each of the following carbonyl compounds is reacted with NaBH4. The

  7. Q26

    Specimen · Paper 1

    1 mark13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    Specimen Paper 1, question 26: The drug cortisone has the formula shown. OH OH O O O In addition to those chiral centres marked by an asterisk (*), how many other chiral centres are present i

  8. Q34

    Specimen · Paper 1

    1 mark17.1 Aldehydes and ketones13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    Specimen Paper 1, question 34: Compound R gives a positive test with alkaline aqueous iodine. Compound R does not display stereoisomerism. What could be compound R? A CH3COCH2CH2OH B CH3CH2CH

  9. Q36

    Specimen · Paper 1

    1 mark13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    Specimen Paper 1, question 36: P and Q are alkenes. They are geometric isomers of each other. Which statement is correct? A P and Q give different products with hot, concentrated, acidified p

  10. Q3(d)(v)

    Specimen · Paper 2

    1 mark13.4 Isomerism: structural isomerism and stereoisomerism
    The whole paper ↗
    Specimen Paper 2, question 3(d)(v): 2-hydroxypropanoic acid has a chiral centre. State what is meant by chiral centre. [1] [Total: 15]
All 10 questions on Isomerism: structural isomerism and stereoisomerism, as a list
  1. June 2024, Paper 4, Q8(a)(i) (1 mark): State the number of chiral carbon atoms in a molecule of neotame. [1]
  2. June 2024, Paper 1, Q25 (1 mark): Structural isomerism and stereoisomerism should be taken into account when answering this question. The structure of 3-methylcyclobutene is shown. 3-methylcyclo
  3. June 2024, Paper 1, Q32 (1 mark): Compound X is a single, pure, optical isomer. Compound X is heated with an excess of concentrated H2SO4. Only one organic product is formed. What is compound X?
  4. June 2024, Paper 2, Q6(a)(i) (1 mark): Explain what is meant by stereoisomerism. [1]
  5. June 2024, Paper 2, Q6(a)(ii) (2 marks): Deduce the number of stereoisomers of V. Explain your reasoning. [2]
  6. Specimen, Paper 1, Q25 (1 mark): Structural isomerism and stereoisomerism should be considered when answering this question. Each of the following carbonyl compounds is reacted with NaBH4. The
  7. Specimen, Paper 1, Q26 (1 mark): The drug cortisone has the formula shown. OH OH O O O In addition to those chiral centres marked by an asterisk (*), how many other chiral centres are present i
  8. Specimen, Paper 1, Q34 (1 mark): Compound R gives a positive test with alkaline aqueous iodine. Compound R does not display stereoisomerism. What could be compound R? A CH3COCH2CH2OH B CH3CH2CH
  9. Specimen, Paper 1, Q36 (1 mark): P and Q are alkenes. They are geometric isomers of each other. Which statement is correct? A P and Q give different products with hot, concentrated, acidified p
  10. Specimen, Paper 2, Q3(d)(v) (1 mark): 2-hydroxypropanoic acid has a chiral centre. State what is meant by chiral centre. [1] [Total: 15]

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