Organic synthesis — Chemistry IAL Past Papers

103 papers, 2014–2025 · Unit 2, Unit 6, Unit 5, Unit 3

Every Chemistry IAL past paper in the collection that assesses organic synthesis.

By unit: all units (103) · Unit 2 (14) · Unit 3 (29) · Unit 5 (31) · Unit 6 (29)

Unit 2: on 14 of 32 papers, 1–14 marks a paper (4 on average)
Unit 3: on 29 of 32 papers, 3–19 marks a paper (11 on average)
Unit 5: on 31 of 31 papers, 3–26 marks a paper (13 on average)
Unit 6: on 29 of 29 papers, 6–24 marks a paper (14 on average)

Read question by question: blind checks found 112 of 120 question parts tagged with the right topic (95% confidence interval 87.4–96.6%). “needs (a)” names an earlier part the listed parts build on, and “then (c)” a later part that continues from them, so a question can be worked through whole.

How topics are found and checked

Papers

Unit 2 · June 2025 · Q16 (c(i), c(iii)) · 3 marks — question paper and mark scheme
Unit 6 · June 2025 · Q4 (a, b, c, d, e(i), e(ii), f, g) · 16 marks — question paper and mark scheme
Unit 5 · June 2025 · Q12 · 1 mark, Q18 (a, b, c, d(i), d(ii)) · 8 marks — question paper and mark scheme
Unit 3 · January 2025 · Q4 (a, b, c, d, e, f) · 13 marks — question paper and mark scheme
Unit 6 · January 2025 · Q2 (a, b, c(i), c(ii), c(iii), c(iv), c(v), d) · 15 marks, Q3 (b, c) · 5 marks · needs (a) — question paper and mark scheme
Unit 5 · January 2025 · Q10 · 1 mark, Q12 · 1 mark, Q19 · 6 marks — question paper and mark scheme
Unit 3 · October 2024 · Q3 (a, b(i), b(ii), c(i), c(ii)) · 11 marks — question paper and mark scheme
Unit 6 · October 2024 · Q4 (a, b(i), b(ii), b(iii), c) · 10 marks — question paper and mark scheme
Unit 5 · October 2024 · Q6 (a, b) · 2 marks, Q19 (c, d) · 8 marks — question paper and mark scheme
Unit 3 · June 2024 · Q2 (a, b, c, d, e, f, g, h, i, j) · 17 marks — question paper and mark scheme
Unit 6 · June 2024 · Q1 (c(i)) · 2 marks · needs (a, b) · then (c(ii)), Q4 (a, b, c, d, e) · 12 marks — question paper and mark scheme
Unit 5 · June 2024 · Q11 (a, b) · 2 marks, Q12 (a, b) · 2 marks, Q15 (c) · 3 marks, Q17 (c) · 3 marks, Q19 (d) · 5 marks — question paper and mark scheme
Unit 3 · January 2024 · Q3 (d, e(i), e(ii)) · 7 marks, Q4 (b(i), b(ii)) · 4 marks — question paper and mark scheme
Unit 6 · January 2024 · Q4 (a, b, c(i), c(ii), d, e, f) · 14 marks — question paper and mark scheme
Unit 5 · January 2024 · Q14 (c) · 6 marks, Q15 (b) · 7 marks — question paper and mark scheme
Unit 3 · October 2023 · Q3 (a(i), a(ii), b, c, d, e, f, g, h) · 15 marks — question paper and mark scheme
Unit 5 · October 2023 · Q14 · 1 mark, Q20 (b) · 7 marks, Q21 (b(ii), b(iii)) · 4 marks — question paper and mark scheme
Unit 3 · June 2023 · Q3 (a(i), a(ii), a(iii), a(iv), a(v)) · 7 marks — question paper and mark scheme
Unit 6 · June 2023 · Q2 (c(i), c(ii), d(ii)) · 4 marks, Q4 (a, b, c, d, e(i), e(ii), f, g) · 16 marks — question paper and mark scheme
Unit 5 · June 2023 · Q20 · 1 mark, Q24 (a(iii)) · 2 marks — question paper and mark scheme
Unit 6 · January 2023 · Q4 (a, b, c, d(i), d(ii), e, f) · 16 marks — question paper and mark scheme
Unit 5 · January 2023 · Q12 (a, b) · 2 marks, Q17 (a, b, c, d) · 13 marks, Q19 (b) · 5 marks, Q20 (e(i), e(ii)) · 4 marks — question paper and mark scheme
Unit 3 · October 2022 · Q4 (b, c(i)) · 5 marks — question paper and mark scheme
Unit 6 · October 2022 · Q3 (a, b, c, d(i), d(ii), d(iii)) · 9 marks — question paper and mark scheme
Unit 5 · October 2022 · Q17 · 1 mark, Q18 · 1 mark, Q21 (a(ii), b(i)) · 5 marks, Q23 (b(i), b(ii), d) · 8 marks — question paper and mark scheme
Unit 2 · June 2022 · Q17 (c(i)) · 1 mark — question paper and mark scheme
Unit 3 · June 2022 · Q3 (a, b, c, d, e(i), e(ii), e(iii), f) · 13 marks — question paper and mark scheme
Unit 6 · June 2022 · Q2 (b(i), b(ii)) · 6 marks, Q4 (a(i), a(ii), a(iii), b(iii)) · 6 marks — question paper and mark scheme
Unit 5 · June 2022 · Q9 (a, b, c, d) · 4 marks, Q14 (a, b) · 10 marks, Q16 · 6 marks — question paper and mark scheme
Unit 3 · January 2022 · Q2 (c) · 3 marks — question paper and mark scheme
Unit 6 · January 2022 · Q2 (a, e(i)) · 3 marks, Q4 (a, b(i), b(ii), c, d, e(i), e(ii), f, g, h) · 16 marks — question paper and mark scheme
Unit 5 · January 2022 · Q15 (a, b) · 11 marks, Q16 (a) · 6 marks — question paper and mark scheme
Unit 2 · October 2021 · Q22 (b, c) · 2 marks — question paper and mark scheme
Unit 3 · October 2021 · Q2 (b, c) · 6 marks — question paper and mark scheme
Unit 6 · October 2021 · Q2 (b(ii), c(ii)) · 2 marks, Q4 (a, b, c(i), c(ii), d, e, f(i), f(iii)) · 13 marks · then (f(ii)) — question paper and mark scheme
Unit 5 · October 2021 · Q16 · 1 mark, Q17 · 1 mark, Q19 (f(ii)) · 2 marks · needs (f(i)) · then (f(iii)) — question paper and mark scheme
Unit 3 · June 2021 · Q4 (a, b(i), b(ii), c(i), c(ii), c(iii), c(iv), d, e(i), e(ii)) · 17 marks — question paper and mark scheme
Unit 6 · June 2021 · Q1 (c) · 3 marks, Q3 (c(i), c(ii), c(iii), c(iv), d(i), d(ii), d(iii), d(iv), d(v)) · 14 marks — question paper and mark scheme
Unit 5 · June 2021 · Q19 (b(iii), c, d) · 10 marks — question paper and mark scheme
Unit 3 · January 2021 · Q4 (a(i), a(ii), a(iii), a(iv), a(v), b) · 13 marks — question paper and mark scheme
Unit 6 · January 2021 · Q3 (a(i), a(ii), a(iii), b, c(i), c(ii), d(i), d(ii), d(iii), d(iv), e) · 16 marks — question paper and mark scheme
Unit 5 · January 2021 · Q17 · 1 mark, Q20 (b, c) · 9 marks, Q22 (a, b) · 5 marks — question paper and mark scheme
Unit 6 · October 2020 · Q2 (a, b(i)) · 6 marks, Q4 (a, b, c, d, e, f, g) · 13 marks — question paper and mark scheme
Unit 5 · October 2020 · Q7 · 1 mark, Q11 · 1 mark, Q12 · 1 mark, Q23 (b) · 6 marks, Q25 (e(ii)) · 4 marks — question paper and mark scheme
Unit 5 · October 2020 · Q12 · 1 mark, Q18 (a, b) · 5 marks, Q19 (f) · 2 marks — question paper and mark scheme
Unit 6 · October 2020 · Q4 (a, b, c, d, e) · 11 marks — question paper and mark scheme
Unit 3 · January 2020 · Q4 (a, b, c(i), c(ii), d(i), d(ii), e, f(i), f(ii)) · 14 marks — question paper and mark scheme
Unit 3 · October 2019 · Q5 (a, b(i), b(ii), c) · 7 marks — question paper and mark scheme
Unit 5 · October 2019 · Q23 (c(ii)) · 3 marks · then (c(iii)), Q24 (c, d, e(i), e(ii), f(i), f(ii), f(iii), f(v)) · 14 marks — question paper and mark scheme
Unit 6 · October 2019 · Q4 (a, b(i), b(ii), b(iii), b(iv), b(v), b(vi), c) · 15 marks — question paper and mark scheme
Unit 2 · June 2019 · Q17 (a(i), a(ii), b, c(i), c(ii), c(iii)) · 12 marks, Q18 (a(i)) · 2 marks — question paper and mark scheme
Unit 2 · June 2019 · Q19 (c) · 1 mark, Q21 (b) · 4 marks, Q23 (b) · 6 marks — question paper and mark scheme
Unit 3 · June 2019 · Q5 (a(i), a(ii), a(iii), a(iv)) · 7 marks — question paper and mark scheme
Unit 3 · June 2019 · Q2 (b(i), b(ii), b(v)) · 5 marks — question paper and mark scheme
Unit 5 · June 2019 · Q9 · 1 mark, Q16 · 1 mark, Q18 (a) · 4 marks, Q19 (a, b(i), b(ii)) · 10 marks, Q20 (a, b, d(i)) · 10 marks — question paper and mark scheme
Unit 6 · June 2019 · Q4 (a, b, c, d, e, f(i), f(ii)) · 14 marks — question paper and mark scheme
Unit 2 · January 2019 · Q19 (c(i), c(ii), c(iii)) · 5 marks — question paper and mark scheme
Unit 3 · January 2019 · Q5 (d(i), d(ii), d(iii)) · 5 marks — question paper and mark scheme
Unit 5 · January 2019 · Q16 · 1 mark, Q18 (a, b) · 2 marks, Q22 (f(i), f(ii)) · 6 marks — question paper and mark scheme
Unit 6 · January 2019 · Q2 (c, e, f) · 4 marks, Q4 (a, b, c, d, e, f(i), f(ii), f(iii), g, h) · 20 marks — question paper and mark scheme
Unit 3 · October 2018 · Q4 (a(ii), b(ii), d(ii)) · 4 marks — question paper and mark scheme
Unit 6 · October 2018 · Q4 (a, b(i), b(ii), c, d, e, f) · 12 marks — question paper and mark scheme
Unit 5 · October 2018 · Q8 (a, b) · 2 marks, Q14 (a, f) · 7 marks, Q17 (d(iii)) · 1 mark — question paper and mark scheme
Unit 3 · June 2018 · Q5 (a, b, c, d, e(i), e(ii), f(i), f(ii), g) · 9 marks — question paper and mark scheme
Unit 6 · June 2018 · Q4 (b(i), b(ii), b(iii), b(iv), b(v), b(vi)) · 11 marks — question paper and mark scheme
Unit 5 · June 2018 · Q16 · 1 mark, Q17 · 1 mark, Q18 · 1 mark, Q19 (a(ii), c(ii)) · 4 marks, Q20 (b(iii)) · 1 mark · needs (b(ii)), Q22 (a, b, d) · 7 marks — question paper and mark scheme
Unit 2 · January 2018 · Q20 (a(ii)) · 1 mark — question paper and mark scheme
Unit 3 · January 2018 · Q2 (b(iv)) · 3 marks, Q4 (a, b, c, d, e, f, g, h) · 13 marks — question paper and mark scheme
Unit 6 · January 2018 · Q2 (a(iv), b(iii)) · 2 marks · needs (a(i), a(ii), a(iii), b(i), b(ii)) · then (a(v)), Q4 (a, b(i), b(ii), c, d, e) · 12 marks — question paper and mark scheme
Unit 5 · January 2018 · Q11 (a, b, c, d) · 4 marks, Q13 (a(i), a(ii), a(iii), b(i)) · 16 marks, Q15 (c(ii), c(iii), c(iv), e(iii)) · 4 marks — question paper and mark scheme
Unit 2 · October 2017 · Q21 (c(ii), c(iii), c(iv)) · 3 marks — question paper and mark scheme
Unit 3 · October 2017 · Q5 (a, b, c, d, e, f, g) · 9 marks — question paper and mark scheme
Unit 5 · October 2017 · Q13 · 1 mark, Q14 (a, b) · 2 marks, Q17 (a(vi)) · 1 mark, Q19 (c(ii)) · 1 mark — question paper and mark scheme
Unit 6 · October 2017 · Q2 (b, d(i)) · 3 marks · needs (c(ii)) · then (d(ii)), Q4 (a(i), a(ii), a(iii), a(iv), a(v)) · 11 marks — question paper and mark scheme
Unit 2 · June 2017 · Q18 · 1 mark, Q22 (b(i), b(ii)) · 3 marks — question paper and mark scheme
Unit 3 · June 2017 · Q2 (a, b(i), b(ii), c(i), c(ii), c(iii), c(iv), d(i), d(ii), d(iii), d(iv), e) · 14 marks — question paper and mark scheme
Unit 6 · June 2017 · Q4 (a, b, c, d, e, f) · 6 marks — question paper and mark scheme
Unit 5 · June 2017 · Q16 · 1 mark, Q18 · 1 mark, Q21 (c(i), d(iii)) · 8 marks, Q23 (c(iii), c(iv)) · 2 marks — question paper and mark scheme
Unit 3 · January 2017 · Q5 (a(i), a(ii), a(iii), b(i), b(ii)) · 9 marks — question paper and mark scheme
Unit 5 · January 2017 · Q14 · 1 mark, Q15 · 1 mark, Q21 (c) · 5 marks — question paper and mark scheme
Unit 6 · January 2017 · Q3 (a(i), a(ii), d(i), d(ii), d(iii), d(iv)) · 8 marks — question paper and mark scheme
Unit 2 · October 2016 · Q16 · 1 mark — question paper and mark scheme
Unit 3 · October 2016 · Q4 (a(i), a(ii), a(iii), b(i), b(ii), b(iii), c(i), c(ii)) · 17 marks — question paper and mark scheme
Unit 5 · June 2016 · Q16 · 1 mark, Q17 · 1 mark, Q19 (b(ii), d(i), d(ii), d(iii), d(iv)) · 7 marks — question paper and mark scheme
Unit 3 · January 2016 · Q5 (a, b(i), b(ii), c, d, e, f, g, h) · 11 marks — question paper and mark scheme
Unit 5 · January 2016 · Q18 · 1 mark, Q20 (e(i), e(ii), e(iii), e(iv), e(v), e(vi)) · 14 marks — question paper and mark scheme
Unit 6 · January 2016 · Q4 (a(i), a(ii), a(iii), b, c(i), c(ii)) · 9 marks — question paper and mark scheme
Unit 2 · June 2015 · Q17 · 1 mark, Q23 (g(i)) · 1 mark — question paper and mark scheme
Unit 3 · June 2015 · Q4 (a, b, c, d, e, f) · 14 marks — question paper and mark scheme
Unit 5 · June 2015 · Q17 · 1 mark, Q19 · 1 mark, Q20 · 1 mark, Q23 (a, b(i), b(iv), b(v), b(vi)) · 13 marks — question paper and mark scheme
Unit 6 · June 2015 · Q4 (a, b, c, d, e, f, g(i), g(ii), g(iii), g(iv)) · 15 marks — question paper and mark scheme
Unit 2 · January 2015 · Q20 (b(ii), b(iii)) · 4 marks — question paper and mark scheme
Unit 3 · January 2015 · Q3 (c(i), c(ii), c(iii)) · 4 marks, Q4 (a, b(i), b(ii), c(i), c(ii), d, e, f(i), f(ii)) · 15 marks — question paper and mark scheme
Unit 5 · January 2015 · Q16 · 1 mark, Q17 · 1 mark, Q18 · 1 mark, Q20 · 1 mark, Q22 (a(iii), a(iv), b(i), b(ii), b(iii), c(ii)) · 10 marks, Q23 (b(i), b(ii)) · 3 marks — question paper and mark scheme
Unit 6 · January 2015 · Q2 (b(i), b(ii)) · 3 marks, Q4 (a, b, c(i), c(ii), d, e, f, g) · 17 marks — question paper and mark scheme
Unit 2 · June 2014 · Q21 (c(i), c(ii)) · 8 marks — question paper and mark scheme
Unit 3 · June 2014 · Q4 (a, b, c, d, e, f(i), f(ii)) · 14 marks — question paper and mark scheme
Unit 5 · June 2014 · Q16 · 1 mark, Q17 · 1 mark, Q18 · 1 mark, Q19 · 1 mark, Q22 (a, c(i), c(ii)) · 6 marks, Q23 (a, b, c) · 5 marks, Q24 (c(ii), c(iii)) · 4 marks — question paper and mark scheme
Unit 6 · June 2014 · Q3 (e(i), e(ii), e(iii), e(iv)) · 11 marks — question paper and mark scheme
Unit 2 · January 2014 · Q23 (d(i)) · 3 marks — question paper and mark scheme
Unit 3 · January 2014 · Q4 (a(i), a(ii), b, c(i), c(ii), d(i), d(ii), e, f(i), f(ii)) · 16 marks — question paper and mark scheme
Unit 5 · January 2014 · Q17 · 1 mark, Q18 · 1 mark, Q19 · 1 mark, Q20 · 1 mark, Q23 (a, b(i), b(ii), c(i), c(ii), c(iii)) · 13 marks, Q24 (a(i), a(v), d(i)) · 3 marks — question paper and mark scheme
Unit 6 · January 2014 · Q4 (a, b, c, d, e, f, g(i), g(ii)) · 15 marks — question paper and mark scheme

All Chemistry papers | How examiners mark each command word