Which of the following is a mismatch?

The correct option is B Electrophoresis − movement of dispersion medium under the influence of electric field
(A) Lyophilic sols are also known as reversible sol because the dispersion medium can be isolated from the colloid by evaporation.
(B) Associated colloids : Some substances at high concentration acts as colloids due to the formation of aggregates. But at the low concentration they behave like normal strong electrolyte. These aggregates formed are called associated colloids.
(C) Tyndall effect is scattering of a beam of light by a medium containing small suspended particles.
(D) Electrophoresis is the motion of charged colloidal particles in a liquid medium under an applied electric field.
Therefore, the correct answer is (D)