A mixture of two miscible liquids having a difference in their boiling points more than 25 °C can be separated by the method of simple distillation.
The boiling point of kerosene = around 150–180 °C
The boiling point of petrol = 95 °C
In this method, the mixture of kerosene and petrol is taken in a distillation flask with a thermometer fitted in it also consider a beaker, water condenser, and a Bunsen burner. The mixture is heated slowly, since the boiling point of petrol is less compare to kerosene, it will first undergo vaporization and condense in the water condenser. The condensed petrol is collected from the condenser outlet, whereas kerosene is left behind in the distillation flask.