Question

Surface tension may be defined as
(a) The work done per unit area in increasing
the surface area of a liquid under isothermal
conditions
(b) The work done per unit area in increasing
the surface area of a liquid under adiabatic
conditions
(c) The work done per unit area in increasing
the surface area of a liquid under adiabatic
conditions
(d) Free surface energy per unit volume

Answer 1

Explanation:

Surface tension is the tendency of liquid surfaces to shrink into the minimum surface area possible. Surface tension allows insects (e.g. water striders), usually denser than water, to float and slide on a water surface.

Answer 2

Explanation:

Surface tension of a liquid may be defined as the work done per unit area in increasing the surface area of a liquid under isothermal conditions.