Settling down of heavier insoluble components of a mixture of water and insoluble substances is called:

Correct option is D

Settling down of heavier insoluble components of a mixture of water and insoluble substances is called sedimentation.
· Sedimentation is the process of settling down of heavier insoluble components of a mixture, typically in a liquid such as water, due to gravity.
· During sedimentation, the solid particles in the mixture gradually sink to the bottom, forming a layer called sediment.
· This process is often used in various industries and in wastewater treatment to separate solids from liquids.
· Filtration is a method to separate the components of a mixture where the solvent part is liquid and the solute is an insoluble solid.
· Evaporation is used to separate the volatile component from its non-volatile solute.