Chemistry 0620 · 11 Organic chemistry
11.5 Alkenes
Describe alkenes as unsaturated hydrocarbons, their manufacture by cracking, testing with bromine, and addition reactions with bromine, hydrogen, and steam.
- Questions
- 392
- Years
- 2010–2026
- Multiple choice
- 251
- Written answer
- 141
- Average marks
- 4.4
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Where this subtopic appears
- Paper 1variants 11, 12, 13162
- Paper 2variants 21, 22, 23120
- Paper 3variants 31, 32, 3366
- Paper 4variants 41, 42, 4336
- Paper 6variants 62, 638
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 3 | 17 | – | 20 |
| 2024 | – | 1 | – | 1 |
| 2023 | 5 | 24 | 16 | 45 |
| 2022 | 7 | 20 | 17 | 44 |
| 2021 | 4 | 11 | 15 | 30 |
| 2020 | – | 7 | 10 | 17 |
| 2019 | 1 | 12 | 15 | 28 |
| 2018 | 4 | 16 | 8 | 28 |
| 2017 | 8 | 13 | 23 | 44 |
| 2016 | 2 | 16 | 20 | 38 |
| 2015 | 6 | 13 | 15 | 34 |
| 2014 | – | 7 | 12 | 19 |
| 2013 | – | 4 | 13 | 17 |
| 2012 | – | 6 | 10 | 16 |
| 2011 | – | 2 | 1 | 3 |
| 2010 | – | 3 | 5 | 8 |
