Chemistry 0620 · 12 Experimental techniques and chemical analysis
12.3 Chromatography
Describe paper chromatography for separating coloured and colourless mixtures, interpret chromatograms, and calculate Rf values.
- Questions
- 141
- Years
- 2010–2026
- Multiple choice
- 85
- Written answer
- 56
- Average marks
- 4.1
Practise experimental techniques and chemical analysis questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 2variants 21, 22, 2365
- Paper 1variants 11, 12, 1335
- Paper 6variants 61, 62, 6316
- Paper 3variants 31, 32, 3314
- Paper 4variants 42, 439
- Paper 5variants 52, 532
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 2 | 4 | – | 6 |
| 2024 | – | 1 | – | 1 |
| 2023 | 2 | 4 | 5 | 11 |
| 2022 | 1 | 3 | 5 | 9 |
| 2021 | 1 | 8 | 1 | 10 |
| 2020 | – | 7 | 8 | 15 |
| 2019 | 1 | 7 | 7 | 15 |
| 2018 | 3 | 6 | 3 | 12 |
| 2017 | 2 | 4 | 5 | 11 |
| 2016 | 3 | 12 | 2 | 17 |
| 2015 | 1 | 2 | 2 | 5 |
| 2014 | – | 2 | 5 | 7 |
| 2013 | – | 1 | 5 | 6 |
| 2012 | – | – | 1 | 1 |
| 2011 | – | 4 | 3 | 7 |
| 2010 | – | 4 | 4 | 8 |
