Two miscible liquids, A and B, are present in a mixture. The boiling point of A is 60 °C and the boiling point of B is 90 °C. Suggest a method to separate them. Also, draw a labelled diagram of the method suggested.

The two miscible liquids A and B can be separated by the process of distillation. This method is suitable because their boiling points differ by 30 °C, which is more than the minimum required difference of 25 °C for distillation to work effectively. Since liquid A has a lower boiling point (60 °C), it will vaporise
first on heating the mixture. The vapours then pass through the condenser, where they are cooled and converted back into pure liquid A, which is collected separately in a conical flask. Liquid B (boiling point 90 °C), having a higher boiling point, remains in the distillation flask and can be collected later.