Consider the following statements about surface tension:\ (A) Surface tension is the outcome of equ

Question

Consider the following statements about surface tension:\ (A) Surface tension is the outcome of equal attractive and repulsive forces acting on the liquid molecule in bulk.\ (B) Surface tension is due to uneven forces acting on the molecules present on the surface.\ (C) The molecule in the bulk can never come to the liquid surface.\(D) The molecules on the surface are responsible for vapour pressure if the system is a closed system. How many of the given statements are correct?

Professor PC Thomas Classes · Answer

Statements B and D are correct. A is false (it is due to uneven forces at the surface, not bulk). C is false (molecules constantly exchange between bulk and surface due to kinetic motion).