what is the principal used in seperation of mixtures?

Dear user,
There are many techniques or principle used in separation of mixtures.They are :
1)Filteration
​This is based on difference in the size of the particles.
2)Distillation
This is based on the difference in boiling points of the materials.
3)Evaporation
This is based on the difference in boiling points of the substance that is it is generally used for solid form.
4)Decantation
​It is a process used to separate liquids and solids.Generally a liquid layer is removed.