Answer:
c) Fractional distillation
Explanation:
A common method used to separate liquid solutions is fractional distillation.
In this process a mixture of two or more liquids that differ in their boiling points are heated. The liquid with the lowest boiling point vaporizes first which is passed onto a condenser and separated out. The same process ensues for the next liquid component until all are separated out in fractions based on their respective boiling points.
For example, consider a mixture of ethanol (b.pt 78 C) and water (b.pt 100 C). The two liquids can be separated by heating the mixture, in which ethanol separates out first followed by water.
