Question

state any two characteristics of angle of contact for liquid in contact with A solid​

Answer 1

Answer:

Characteristics of the Angle of Contact:

For a liquid which completely wets the solid, the angle of contact is equal to zero. When the angle of contact betweenthe liquid and a solid surface is small (acute), the liquid is said to wet thesurface. Thus water wets glass.

Answer 2

Answer:

Characteristics of angle of contact:

(1) It depends upon the nature of the liquid and solid in contact, and is constant for a given liquid-solid pair, other factors remaining unchanged.

(2) It depends upon the medium (gas) above the free surface of the liquid.

(3) It is independent of the inclination of the solid to the liquid surface.

(4) It changes with surface tension and, hence, with the temperature and purity of the liquid.