question_answer 107)

  Assertion (A) When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side. Reason (R) Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration solution.

Answer:

                  (b) Assertion and reason both are correct statements but reason is not the correct explanation of assertion. When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side. Solvent molecules always flow from lower concentration to higher concentration of solution.