As fuels
3 marks · EasyThe table below shows approximate boiling points for some fractions separated from crude oil using fractional distillation. Complete the table by filling in the missing fraction names.
| Fraction | Approximate Boiling Point (C) |
|---|---|
| Refinery gases | <40 |
| ___ | 40–180 |
| Kerosene | 180–260 |
| ___ | >350 |
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(row2) Gasoline (or petrol)
(row4) Bitumen
Must show: Gasoline/petrol, Bitumen
Also accept: petrol; residue
Common mistakes: Diesel for highest fraction
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Identifies gasoline/petrol as the 40–180 C fraction
B1 · 1 mark · Identifies bitumen as the >350 C fraction
B2 · 1 mark · All 4 rows correctly filled (allows 1 mark for all correct in a single attempt)
Worked solution
| Fraction | Approximate Boiling Point (C) |
|---|---|
| Refinery gases | <40 |
| Gasoline (or petrol) | 40–180 |
| Kerosene | 180–260 |
| Bitumen | >350 |