The table shows the boiling point range of four fractions obtained from crude oil. Which fraction is collected nearest the top of the fractionating column?
Table: The boiling point range of four fractions obtained from crude oil
| Fraction | Boiling point range in ∘C^\circ\text{C}∘C |
|---|---|
| W | 40 to 75 |
| X | 120 to 180 |
| Y | 250 to 350 |
| Z | above 350 |
Z
Y
X
W
40 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.