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The wider impact of chemistry: Eduqas A‑Level Chemistry questions

Every Eduqas A-Level Chemistry exam question on C2.4 The wider impact of chemistry, 2016–2025, with its mark scheme and examiner’s report.

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1,513 questions

  1. Q8(d)(ii)

    June 2025 · Component 2

    3 marksOA4 Organic synthesis and analysisC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2025 Component 2, question 8(d)(ii): PA66 is a very stable polyamide and is resistant to many of the usual methods used to recycle polymers. A new method has recently been used to recycle PA66 It i

  2. Q9(b)(ii)

    June 2025 · AS Component 2

    1 markC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2025 AS Component 2, question 9(b)(ii): Suggest why scientists are concerned about this reaction. [1]

  3. Q14(d)(ii)

    Autumn 2021 · Component 1

    2 marksC2.4 The wider impact of chemistry
    The whole paper ↗
    Autumn 2021 Component 1, question 14(d)(ii): Limestone is a common rock which consists mainly of calcium carbonate, but often contains dolomite [CaMg(CO3)2] as well as insoluble, inert impurities such as s

  4. Q7(c)

    Autumn 2021 · Component 2

    2 marksC2.4 The wider impact of chemistry
    The whole paper ↗
    Autumn 2021 Component 2, question 7(c): Another method of producing cyclohexanol is by the reduction of phenol. OH OH catalyst + 3H2 Apart from cost, state two factors that should be considered when c

  5. Q9(a)(ii)

    Autumn 2021 · Component 2

    1 markC2.4 The wider impact of chemistry
    The whole paper ↗
    Autumn 2021 Component 2, question 9(a)(ii): Suggest why ethanol is seen as a ‘greener’ solvent for this extraction than dichloromethane. [1]

  6. Q9(b)(ii)

    Autumn 2020 · Component 1

    4 marksC2.4 The wider impact of chemistry
    The whole paper ↗
    Autumn 2020 Component 1, question 9(b)(ii): An alternative method of synthesising methyllithium is by using chloromethane as a source of the methyl group. Use the information given below to suggest which

  7. Q7(d)

    Autumn 2020 · Component 2

    4 marksC2.4 The wider impact of chemistry
    The whole paper ↗
    Autumn 2020 Component 2, question 7(d): The combustion of LPG and other hydrocarbons causes the emission of carbon dioxide, which is a cause of global warming. One method of removing carbon dioxide fr

  8. Q9(c)

    Autumn 2020 · AS Component 1

    1 markC2.4 The wider impact of chemistry
    The whole paper ↗
    Autumn 2020 AS Component 1, question 9(c): Methane also reacts with oxygen in an exothermic reaction and could be used as a rocket fuel. Apart from conservation of fossil fuel reserves, suggest an enviro

  9. Q13(b)(iii)

    June 2019 · Component 1

    1 markC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2019 Component 1, question 13(b)(iii): An alternative route for producing hydrazine starts with the molecule urea, which is produced in biological systems. (NH2)2CO + NaOCl + 2NaOH N2H4 + H2O + NaCl

  10. Q8(d)(i)

    June 2019 · Component 2

    1 markC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2019 Component 2, question 8(d)(i): The disposal of surplus stocks of CS gas is a problem which is causing concern. One way is by incineration. high temperature chlorinated hydrocarbons CS gas hyd

  11. Q10(d)(v)

    June 2018 · Component 2

    1 markC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2018 Component 2, question 10(d)(v): This oxidation can also be carried out using benzene as the solvent. Compound B is the only product and the rate of oxidation is higher than when using water as

  12. Q12(c)(ii)

    June 2018 · Component 2

    2 marksC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2018 Component 2, question 12(c)(ii): An alternative method of obtaining prop-2-en-1-ol is by the rearrangement of epoxypropane. H catalyst C CH2 CH2 CHCH2OH high temperature H3C O When choosing an

  13. Q10(a)(ii)

    June 2017 · Component 1

    3 marksC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2017 Component 1, question 10(a)(ii): Suggest and explain which of the two routes would be favoured by the principles of green chemistry. You should include two advantages and one disadvantage of yo

  14. Q8(c)

    June 2017 · Component 2

    2 marksC2.4 The wider impact of chemistry
    The whole paper ↗
    June 2017 Component 2, question 8(c): A summary of these two industrial processes to make ethanedioic acid is shown in the table. Organic starting Reaction Percentage Method materials temperature /
All 14 questions on The wider impact of chemistry, as a list
  1. June 2025, Component 2, Q8(d)(ii) (3 marks): PA66 is a very stable polyamide and is resistant to many of the usual methods used to recycle polymers. A new method has recently been used to recycle PA66 It i
  2. June 2025, AS Component 2, Q9(b)(ii) (1 mark): Suggest why scientists are concerned about this reaction. [1]
  3. Autumn 2021, Component 1, Q14(d)(ii) (2 marks): Limestone is a common rock which consists mainly of calcium carbonate, but often contains dolomite [CaMg(CO3)2] as well as insoluble, inert impurities such as s
  4. Autumn 2021, Component 2, Q7(c) (2 marks): Another method of producing cyclohexanol is by the reduction of phenol. OH OH catalyst + 3H2 Apart from cost, state two factors that should be considered when c
  5. Autumn 2021, Component 2, Q9(a)(ii) (1 mark): Suggest why ethanol is seen as a ‘greener’ solvent for this extraction than dichloromethane. [1]
  6. Autumn 2020, Component 1, Q9(b)(ii) (4 marks): An alternative method of synthesising methyllithium is by using chloromethane as a source of the methyl group. Use the information given below to suggest which
  7. Autumn 2020, Component 2, Q7(d) (4 marks): The combustion of LPG and other hydrocarbons causes the emission of carbon dioxide, which is a cause of global warming. One method of removing carbon dioxide fr
  8. Autumn 2020, AS Component 1, Q9(c) (1 mark): Methane also reacts with oxygen in an exothermic reaction and could be used as a rocket fuel. Apart from conservation of fossil fuel reserves, suggest an enviro
  9. June 2019, Component 1, Q13(b)(iii) (1 mark): An alternative route for producing hydrazine starts with the molecule urea, which is produced in biological systems. (NH2)2CO + NaOCl + 2NaOH N2H4 + H2O + NaCl
  10. June 2019, Component 2, Q8(d)(i) (1 mark): The disposal of surplus stocks of CS gas is a problem which is causing concern. One way is by incineration. high temperature chlorinated hydrocarbons CS gas hyd
  11. June 2018, Component 2, Q10(d)(v) (1 mark): This oxidation can also be carried out using benzene as the solvent. Compound B is the only product and the rate of oxidation is higher than when using water as
  12. June 2018, Component 2, Q12(c)(ii) (2 marks): An alternative method of obtaining prop-2-en-1-ol is by the rearrangement of epoxypropane. H catalyst C CH2 CH2 CHCH2OH high temperature H3C O When choosing an
  13. June 2017, Component 1, Q10(a)(ii) (3 marks): Suggest and explain which of the two routes would be favoured by the principles of green chemistry. You should include two advantages and one disadvantage of yo
  14. June 2017, Component 2, Q8(c) (2 marks): A summary of these two industrial processes to make ethanedioic acid is shown in the table. Organic starting Reaction Percentage Method materials temperature /

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