Answer:
A. distillation of a mixture
Explanation:
The topic the teacher is most likely talking about is the distillation of a mixture.
During fractional distillation, a mixture is separated into it constituents based on differences in their boiling point.
- A liquid made up of denser hydrocarbon such as crude oil is fed into the distillation chamber.
- It is then heated.
- At different boiling point of its constituents, the fractions begins to separate out.
- They rise in the column.
- The condensate is then collected.
This process is the distillation of mixture.
