Explain the phenomenon of surface tension on the basis molecular theory.

Explain the phenomenon of evaporation on the basis of kinetic theory.

The phenomenon of surface tension exhibited liquids is due to

In accordance to molecular theory,

Explain the rise of temperature on heating on the basis of kinetic theory.

Explain paramagnetism on the basis of electron theory.

What properties of magnetic substance are explained on the basis of molecular theory ?

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 ?