Answer: True
Step-by-step explanation:
Filtration and dialysis are analytical techniques which are used to separate the particles present in the solution.
The particles that is having a bigger size will be left at the bottom in the solution and the smaller particles will be at the top.
This is because the smaller particles are light in weight and large weight are heavier. Both of the methods are used as a purification technique for the separation of impurities from the solution based on the particle size.