What are micelles? Give an example of a micelles system?
What is gold number?
Explain Brownian motion?
Give the expression of Freund lich isothems?
What do you understand by desorption ?
Define catalysis?
What is difference between a sol and a gel?
What is an emulsion? Give an example?
Define peptization?
Give an example of homogenous catalyst & one of heterogenous
catalyst
What are zealites?
What is shape of selective catalysis?
Give reason why a finely divided substance is more effective as an
Absorbent.
Explain Tyndall effect?
What is the principal of dialysis?
NOTE- 2 MARK QUESTIONS.
Distinguish between the meaning of the terms adsoreption & absorption.
Give one example of each
What do you mean by activity & selectivity of catalysts ?
What is demulsification ? Name two demulsifiers .
Give one example each of “oil in water ’’ & “water in oil ’’ emulsion .
Give Hardy-Schulze rule .
What is difference between multimolecular & macromolecular colloids? Give an example of each ?
What are the factors which influence the adsorption of a gas on a solid ?
Differentiate between multi-molecular colloids & micelles with one example
of each .
What do you mean by an adsorption isotherm?
What are difference between hydrophilic & hydrophodic sols ?
Differentiate b/n lyophilic & lyophobic sols ?
Describe driefly the following -
(a) dialysis (b)electro-phoresis .
Draw a plot of variation in quantity of gas adsorbed .[x/m] with the pressure
Of the gas . Also plot the graph b/n log x/m is log P at the constant tempreture .
What is slope of this line ?
NOTE-THREE MARKS QUESTION.
What is difference between physical adsorption &chemisorption?
What are the factor, which influence the adsorption of a gas on a solid?
What is an adsorption isotherms? Distinguish between fieund lich
adsorption isotherms & langnaur adsorption isotherms.
Explain the terms with suitable example-
(a) Gel (b)Aerosol & (c)hydrosol.
What do you understand by adsorption isotherms & adsorption isobars? Explain freundlich adsorption isotherms for the adsorption on solids.