A liquid will not wet the surface of a solid if the angle of contact between the surface and the liq

Question

A liquid will not wet the surface of a solid if the angle of contact between the surface and the liquid is

Professor PC Thomas Classes · Answer

(c) : The wettability of a surface by a liquid depends on the angle of contact. If the angle of contact is acute ($	heta < 90^{\circ}$), the liquid wets the solid surface. If the angle of contact is obtuse ($	heta > 90^{\circ}$), the cohesive forces within the liquid are stronger than the adhesive forces between the liquid and the solid, meaning the liquid will not wet the surface.