Read the given passage and fill in the blanks by choosing an appropriate option.
When a mixture of two `ul(" (i) ")` liquids having a difference of `25^(@)C` in their boiling points is to be separated, a `ul(" (ii) ")` is used which increases the `ul(" (iii) ")` surface area. As a result, when the vapours of both the liquids rise, the `ul(" (iv) ")` volatile liquid will condense while the vapours of `ul(" (v) ")` volatile liquid will rise.