Write an important characteristic of lyophilic sols.

(a) In reference to Freundlich adorption isotherm write the expression for adsorption of gases on solids in the form of an equation. (b) Write an important characteristic of lyophilic solc. (c) Based on type of particles of dispersed phase, give one example each of associated colloid and multimolecular colloid.

How are the colloidal classified on the basis of the nature of interaction between dispersed phase and dispersion medium? Describe an important characteristic of each class. Which of these sols need stabilising agents for preservaion?

Describe the important characteristics of gymnosperms.

Mention the important characteristics of aromatic compounds.

Surface tension of lyophilic sol is

Give a brief account of the important characteristics of gases.

Choose the correct representation of effect of sewage discharge on important characteristics of a river.

surface tension of lyophilic sols is

The most important characteristic of living organisms is

List any three important characteristics of a population and explain.