Chemistry 0620 · 6 Chemical reactions
6.4 Redox
Define redox, oxidation, and reduction in terms of oxygen transfer, electron transfer, and oxidation number, and identify oxidising and reducing agents.
- Questions
- 307
- Years
- 2010–2026
- Multiple choice
- 211
- Written answer
- 96
- Average marks
- 4
Practise chemical reactions questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 2variants 21, 22, 23113
- Paper 1variants 11, 12, 13111
- Paper 3variants 31, 32, 3338
- Paper 4variants 41, 42, 4325
- Paper 6variants 61, 62, 6313
- Paper 5variants 51, 52, 537
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 4 | 12 | – | 16 |
| 2024 | – | 1 | – | 1 |
| 2023 | 4 | 9 | 15 | 28 |
| 2022 | 4 | 11 | 13 | 28 |
| 2021 | 2 | 11 | 11 | 24 |
| 2020 | – | 9 | 11 | 20 |
| 2019 | 6 | 15 | 9 | 30 |
| 2018 | 4 | 8 | 19 | 31 |
| 2017 | 5 | 11 | 12 | 28 |
| 2016 | 6 | 15 | 15 | 36 |
| 2015 | 2 | 7 | 10 | 19 |
| 2014 | – | 4 | 6 | 10 |
| 2013 | – | 6 | 5 | 11 |
| 2012 | – | 3 | 7 | 10 |
| 2011 | – | 3 | 3 | 6 |
| 2010 | – | 5 | 4 | 9 |
