Question

define the term angle of contact state the factors on which it depends​

Answer 1

The angle of contact depends on: a. The nature of liquid and solid in contact. ... The medium which exists above the free surface of the liquid.

Answer 2

The angle between the meniscus and the containing walls of a column of liquid measured from the vertical wall below the surface of the liquid to the position of the tangent to the meniscus at its point of contact with the wall.

The angle of contact depends on:

a.     The nature of liquid and solid in contact.

b.     The medium which exists above the free surface of the liquid.

However, it is fixed for a given pair of solid and liquid surrounding medium.