Question

A liquid does not wet a solid surface if the ange of contact for given pair of liquid and solid surfaces is

Answer 1

A liquid does not wet a solid surface if the angle of contact for given pair of liquid and solid surfaces is

Contact angle $\theta$ is the angle, measured through the liquid, where a liquid interface meets a solid surface. If the liquid contact angle is larger than $90{}^{\circ}$ , the solid surface is considered hydrophobic (liquid does not wet a solid).