Table 1 shows the percentages of different fractions obtained from crude oil sourced from three different oil fields: Alpha, Beta, and Gamma.
| Fraction (in order of increasing boiling point) | Percentage in crude oil from Field Alpha (%) | Percentage in crude oil from Field Beta (%) | Percentage in crude oil from Field Gamma (%) |
|---|---|---|---|
| Refinery gases | 4 | 15 | 8 |
| Petrol | 10 | 32 | 18 |
| Kerosene | 14 | 20 | 22 |
| Diesel oil | 22 | 15 | 25 |
| Heavy fuel oil | 30 | 12 | 17 |
| Bitumen | 20 | 6 | 10 |
State which oil field produces crude oil containing the highest percentage of the light, low boiling point fractions (refinery gases and petrol).
105 exam-style questions on Edexcel GCSE Chemistry 9.1 Fuels, covering 9.1.1 Hydrocarbons and crude oil, 9.1.2 Fractional distillation of crude oil and its fractions, 9.1.3 The alkanes as a homologous series, 9.1.4 Complete and incomplete combustion, 9.1.5 Pollutants from burning fuels, 9.1.6 Hydrogen as a fuel and non-renewable fossil fuels, and 9.1.7 Cracking of larger alkanes. Each one has a worked solution and a mark scheme showing where the marks go.