A student in the lab inadvertently dropped a blue liquid into a beaker of water. The blue liquid is insoluble in water and has a higher density than water. What is the most effective approach for him to separate the two liquids?

 Two liquids are separated in a separating funnel based on their relative density. The liquid with a higher density forms the lower layer and can be separated with the help of tap, while the liquid with a lower density forms the upper layer. Since the two liquids are immiscible and differ in density so they will be separated by using separating funnel.