Chemistry 5070 · 6 Chemical reactions
6.4 Redox
Define redox, oxidation, and reduction using oxygen transfer, electron transfer, and oxidation numbers, and identify oxidising and reducing agents.
- Questions
- 218
- Years
- 2004–2026
- Multiple choice
- 125
- Written answer
- 93
- Average marks
- 5.6
Practise chemical reactions questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 01, 11, 12115
- Paper 2variants 02, 21, 2249
- Paper 4variants 04, 41, 4238
- Paper 3variants 03, 31, 3216
Questions by year
| Year | May/June | Oct/Nov | Total |
|---|---|---|---|
| 2026 | 7 | – | 7 |
| 2023 | 12 | 7 | 19 |
| 2022 | 9 | 7 | 16 |
| 2021 | 11 | 8 | 19 |
| 2020 | 7 | 6 | 13 |
| 2019 | 7 | 9 | 16 |
| 2018 | 8 | 7 | 15 |
| 2017 | 6 | 1 | 7 |
| 2016 | 6 | 8 | 14 |
| 2015 | 6 | 3 | 9 |
| 2014 | 2 | 1 | 3 |
| 2013 | 4 | 1 | 5 |
| 2012 | 2 | 3 | 5 |
| 2011 | 2 | 2 | 4 |
| 2009 | 5 | 5 | 10 |
| 2008 | 7 | 9 | 16 |
| 2007 | 6 | 6 | 12 |
| 2006 | 7 | 8 | 15 |
| 2005 | 3 | 7 | 10 |
| 2004 | – | 3 | 3 |
