Explain why: Surface tension of a liquid is independent of the area of the surface.

Explain why (a). The angle of contact of mercury with galss is obtuse, while that of water with glass is acute. (b). Water on a clean glass surface tends to spread out while mercury on the same surface tends to form drops. (Put differently, water wets glass while mercury does not). (c). Surface tension of a liquid is independent of the area of the surface (d). Water with detergent disolved in it should have small angles of contact. (e). A drop of liquid under no external forces is always spherical in shape.

Surface tension of a liquid depends upon .

Surface tension in a liquid is due to :

Origin of surface tension of a liquid is due to

The surface tension of a liquid is affected by

Surface tension of a liquid is a molecular phenomenon of liquids involving the force of cohension along the liquid molecules. It is scalar quantity and is numberically equal to the surface energy. Numerically, it is proved that the potential soluble salts and surfce active substance. Sparingly soluble salts and surface acitve substances decrease the surface tension of the liquid. However, the fairly soluble solutes increase the surface tension of the liquid. Surface tension of a liquid is independent of surface area but it depends on the intemolecular forces and the temperature. Which among the following is not the unit of surface tension ?