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Alkenes: CAIE IGCSE Chemistry questions

Every CAIE IGCSE Chemistry exam question on 11.5 Alkenes, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

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407 questions

  1. Q4(a)

    June 2024 · Paper 3

    1 mark11.5 Alkenes
    The whole paper ↗
    June 2024 Paper 3, question 4(a): Fig. 4.1 shows the displayed formula of a compound extracted from a plant. H H H C H H H C H H C C C C C H H C H C H H C H H H H O H Fig. 4.1 On Fig. 4.1, dra

  2. Q8(c)

    June 2024 · Paper 3

    2 marks11.5 Alkenes
    The whole paper ↗
    June 2024 Paper 3, question 8(c): Describe how alkenes are manufactured from petroleum fractions. [2] [Total: 9]

  3. Q1(f)

    June 2024 · Paper 4

    1 mark11.5 Alkenes
    The whole paper ↗
    June 2024 Paper 4, question 1(f): manufacture alkenes and hydrogen from large alkane molecules [1]

  4. Q7(c)

    June 2024 · Paper 4

    1 mark11.5 Alkenes
    The whole paper ↗
    June 2024 Paper 4, question 7(c): Propene, C3H6, can be produced by heating C11H24. The products of the reaction are propene, hydrogen and one other product in a 1 : 1 : 1 mole ratio. Complete

  5. Q37

    Specimen · Paper 1

    1 mark11.5 Alkenes
    The whole paper ↗
    Specimen Paper 1, question 37: Ethene is a hydrocarbon. Which row shows the type of covalent bond between the carbon atoms in ethene and the effect of ethene on aqueous bromine? type of coval

  6. Q8(e)(i)

    Specimen · Paper 3

    2 marks11.5 Alkenes
    The whole paper ↗
    Specimen Paper 3, question 8(e)(i): Define the term cracking. [2]

  7. Q8(e)(ii)

    Specimen · Paper 3

    1 mark11.5 Alkenes
    The whole paper ↗
    Specimen Paper 3, question 8(e)(ii): Complete the equation for the cracking of dodecane, C12H26, to form ethene and one other hydrocarbon. C12H26 → C2H4 + [1] [Total: 13] Group I II III IV V VI VII

  8. Q6(b)(iii)

    Specimen · Paper 4

    2 marks11.5 Alkenes
    The whole paper ↗
    Specimen Paper 4, question 6(b)(iii): Alkynes are unsaturated. Describe a test for unsaturation. test result [2]

  9. Q6(d)(i)

    Specimen · Paper 4

    1 mark11.5 Alkenes
    The whole paper ↗
    Specimen Paper 4, question 6(d)(i): Suggest why stage one is called an addition reaction. [1]
All 9 questions on Alkenes, as a list
  1. June 2024, Paper 3, Q4(a) (1 mark): Fig. 4.1 shows the displayed formula of a compound extracted from a plant. H H H C H H H C H H C C C C C H H C H C H H C H H H H O H Fig. 4.1 On Fig. 4.1, dra
  2. June 2024, Paper 3, Q8(c) (2 marks): Describe how alkenes are manufactured from petroleum fractions. [2] [Total: 9]
  3. June 2024, Paper 4, Q1(f) (1 mark): manufacture alkenes and hydrogen from large alkane molecules [1]
  4. June 2024, Paper 4, Q7(c) (1 mark): Propene, C3H6, can be produced by heating C11H24. The products of the reaction are propene, hydrogen and one other product in a 1 : 1 : 1 mole ratio. Complete
  5. Specimen, Paper 1, Q37 (1 mark): Ethene is a hydrocarbon. Which row shows the type of covalent bond between the carbon atoms in ethene and the effect of ethene on aqueous bromine? type of coval
  6. Specimen, Paper 3, Q8(e)(i) (2 marks): Define the term cracking. [2]
  7. Specimen, Paper 3, Q8(e)(ii) (1 mark): Complete the equation for the cracking of dodecane, C12H26, to form ethene and one other hydrocarbon. C12H26 → C2H4 + [1] [Total: 13] Group I II III IV V VI VII
  8. Specimen, Paper 4, Q6(b)(iii) (2 marks): Alkynes are unsaturated. Describe a test for unsaturation. test result [2]
  9. Specimen, Paper 4, Q6(d)(i) (1 mark): Suggest why stage one is called an addition reaction. [1]

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