Question

What are the similarities between diffusion, dialysis and osmosis?

Answer 1

$\huge\bold{Answer:}$

$\large\bold{Diffusion:}$ The movement of substances or molecules of the subtances from the region of higher concentration in air to the region of lower concentration in air.

$\large\bold{Osmosis:}$ The movement of substances or molecules of the subtances from the region of higher concentration in water to the region of lower concentration in water.

$\large\bold{Dialysis:}$ The process of separating molecules in a particular solution by the difference in their rates of diffusion through a (selectively) semipermeable membrane, such as dialysis tubing.
[Dialysis is basically a common laboratory technique that operates on the same principle as of the medical dialysis.]

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So we see that the main similarity between all these is that the substances moves from the region of higher concentration towards region of lower concentration.