Question 10
MediumOriginal questionPetrol, diesel, kerosene and bitumen are obtained from crude oil by
Show the answer and explanation
CorrectNot quiteAnswer D
Correct answer: D
Explanation
The parts of crude oil boil at different temperatures.
In a fractionating column the vapours condense at different heights, so each fraction is collected separately.
Worth noting
Simple distillation works only when the boiling points are far apart; close boiling points need a fractionating column.
- Concept
- Fractional distillation
- Typical timeTypical
- 60 s
- Your timeYours
- —
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