0620/13 Chemistry May Jun 2021 Online Test | Cambridge IGCSE MCQ

The table shows the solubility of four substances, W, X, Y and Z, in ethanol and in water.
Two methods of separation are given.
● method 1: add the substance to ethanol and then filter
● method 2: add the substance to water and then filter
Which substances can be separated from each other by both method 1 and method 2?