Define semi-permeable membrane.

$ Positive diffusion occurs against the concentration gradients. ! Osmosis does not require a semi-permeable membrane.

A perfectly semi-permeable membrane when used to separate a solution from its solvent permits through it the passage of

The semi-permeable membrane of any substance allows …………….molecules to pass through it.

The solutions having same osmotic pressure w.r.t. same semi-permeable membrane are called