Question

The wettability of a surface by a liquid depends primarily on -

• A. Angle of contact between the surface and the liquid
• B. Viscosity
• C. Surface tension
• D. Density

Answer 1

The correct option is A Angle of contact between the surface and the liquid

The wettability of a surface by a liquid depends upon the relative magnitude of cohesive force between the liquid molecules and the adhesive force between the solid and liquid molecules.

The same forces also affect the value of angle of contact for the given solid-liquid pair.

So, we can say that it depends on angle of contact between the surface and the liquid.

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Hence, $\left(A\right)$ is the correct answer.