Unit 1: on 33 of 33 papers, 2–21 marks a paper (13 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.
Unit 1 · January 2025 · Q17 · 1 mark, Q19 · 1 mark, Q20 · 1 mark, Q21 (a(iii), b(i)) · 5 marks, Q24 (b) · 1 mark · then (c), Q25 (b(ii)) · 2 marks — question paper and mark scheme
Unit 1 · October 2024 · Q15 (a, b) · 2 marks, Q16 · 1 mark, Q19 (a(i), a(ii), b) · 8 marks — question paper and mark scheme
Unit 1 · June 2024 · Q3 (b) · 1 mark, Q19 (a, b(i), b(ii), b(iii), b(iv), c(i), d) · 13 marks, Q20 (a, b) · 6 marks — question paper and mark scheme
Unit 1 · January 2024 · Q15 · 1 mark, Q18 (a, b, c) · 10 marks, Q19 (c(i), c(ii)) · 6 marks — question paper and mark scheme
Unit 1 · October 2023 · Q10 (a, b) · 2 marks, Q11 · 1 mark, Q16 · 1 mark, Q20 (a(ii), b(i), c(iii), d(i), e) · 7 marks · needs (c(i), c(ii)) — question paper and mark scheme
Unit 1 · June 2023 · Q16 · 1 mark, Q17 · 1 mark, Q18 (a, b) · 2 marks, Q22 (d(ii), e) · 4 marks — question paper and mark scheme
Unit 1 · January 2023 · Q20 · 1 mark, Q22 (a(i), a(ii), a(iii), a(iv), b(i), b(ii), c(i), c(ii)) · 15 marks — question paper and mark scheme
Unit 1 · October 2022 · Q5 · 1 mark, Q15 (b, c(i), c(ii)) · 9 marks, Q17 (b(i), b(ii), b(iii), c, d) · 6 marks — question paper and mark scheme
Unit 1 · June 2022 · Q15 · 1 mark, Q18 · 1 mark, Q21 (a(ii)) · 3 marks, Q22 (c(i), c(ii), c(iii), d(i)) · 8 marks, Q23 (a(i), b) · 3 marks — question paper and mark scheme
Unit 1 · January 2022 · Q21 (a, b(i), b(ii), c(ii), c(iii), c(iv)) · 13 marks — question paper and mark scheme
Unit 1 · October 2021 · Q11 (a, b) · 2 marks, Q15 (b(ii), b(iii), c, d) · 10 marks — question paper and mark scheme
Unit 1 · June 2021 · Q23 (a, b(ii), c(i), c(ii), d, e, f) · 15 marks — question paper and mark scheme
Unit 1 · January 2021 · Q17 · 1 mark, Q20 (b, c, d(ii), e) · 9 marks, Q21 (c(i), c(iii), c(iv), e(i), e(ii), f(ii)) · 11 marks — question paper and mark scheme
Unit 1 · October 2020 · Q20 (a(i), a(ii), a(iii), a(iv), b(i), b(ii), b(iii)) · 10 marks, Q21 (b(i), b(ii)) · 6 marks — question paper and mark scheme
Unit 1 · January 2020 · Q16 · 1 mark, Q17 · 1 mark, Q21 (c(i), d(ii), f(ii)) · 7 marks — question paper and mark scheme
Unit 1 · October 2019 · Q18 · 1 mark, Q19 · 1 mark, Q23 (a, b(i), b(ii), c, d, e, f) · 11 marks — question paper and mark scheme
Unit 1 · June 2019 · Q5 · 1 mark, Q18 · 1 mark, Q20 · 1 mark, Q24 (b(v), c, d, e) · 9 marks — question paper and mark scheme
Unit 1 · June 2019 · Q16 · 1 mark, Q18 · 1 mark, Q19 · 1 mark, Q20 · 1 mark, Q22 (c(ii), d(i), d(ii), e(i), e(ii)) · 7 marks — question paper and mark scheme
Unit 1 · January 2019 · Q19 · 1 mark, Q20 · 1 mark, Q24 (a, e) · 6 marks, Q25 (b(i), b(ii)) · 2 marks — question paper and mark scheme
Unit 1 · January 2019 · Q15 · 1 mark, Q16 · 1 mark, Q23 (b, c, d(i), d(ii), d(iii), d(iv), e) · 12 marks — question paper and mark scheme
Unit 1 · October 2018 · Q16 · 1 mark, Q18 · 1 mark, Q22 (d(ii), d(iii)) · 3 marks · needs (d(i)), Q23 (a, b(i), b(ii), c) · 10 marks — question paper and mark scheme
Unit 1 · June 2018 · Q17 · 1 mark, Q22 (a(i), a(ii), b(i), b(ii), c, d(i), d(ii), d(iii)) · 15 marks — question paper and mark scheme
Unit 1 · January 2018 · Q17 (a(i), a(ii), a(iii), b(i), b(ii), c) · 17 marks — question paper and mark scheme
Unit 1 · October 2017 · Q3 · 1 mark, Q4 · 1 mark, Q5 · 1 mark, Q22 (e(ii)) · 4 marks — question paper and mark scheme
Unit 1 · June 2017 · Q14 · 1 mark, Q16 · 1 mark, Q17 · 1 mark, Q18 · 1 mark, Q23 (b(i), b(ii), b(iii), c) · 8 marks — question paper and mark scheme
Unit 1 · January 2017 · Q3 · 1 mark, Q4 · 1 mark, Q21 (a(i), a(ii), b, c) · 8 marks — question paper and mark scheme
Unit 1 · October 2016 · Q3 (a, b) · 2 marks, Q4 · 1 mark, Q18 (a(i), a(ii), b(iii), b(iv)) · 6 marks — question paper and mark scheme
Unit 1 · January 2016 · Q15 · 1 mark, Q17 · 1 mark, Q21 (a(ii), b(i), b(ii), b(iii), b(iv), c) · 10 marks — question paper and mark scheme
Unit 1 · June 2015 · Q17 · 1 mark, Q18 · 1 mark, Q23 (a, b(i), b(ii), b(iii), b(iv), c(i), c(ii), d(i), d(ii)) · 14 marks — question paper and mark scheme
Unit 1 · January 2015 · Q22 (c(ii), c(iii)) · 3 marks, Q23 (a(i), a(ii), a(iii)) · 6 marks — question paper and mark scheme
Unit 1 · June 2014 · Q19 · 1 mark, Q21 (a(ii), a(iii), d, e(i), e(ii)) · 8 marks · needs (a(i)) — question paper and mark scheme
Unit 1 · January 2014 · Q20 (a, b(i), b(ii), b(iii), c, d(i), d(ii), d(iii)) · 14 marks — question paper and mark scheme