The material on the surface of which the adsorption takes place is known as ____________
adsorbate
absorbate
adsorbent
absorbent
The ability of anion to bring about coagulation of a given colloid depends upon
Its charge
The sign of the charge alone
The magnitude of its of its charge
Both magnitude and sign of its charge
The method usually employed for the precipitation of a colloidal solution is
Dialysis
Addition of electrolytes
Diffusion through animal membrane
Condensation
Which of the following forms cationic micelles above certain concentration?
Sodium ethyl suhphate
Sodium acetate
Urea
Cetyl trimethyl ammonium bromide
If accumulation of gas on the surface of a solid occurs on account of weak van der Waal's forces,the adsorption is termed as ___________
Physisorption
Chemisorption
desorption
Sorption
According to the adsorption theory of catalysis, the speed of the reaction increases because
Absorption produces heat which increases the speed of the reaction
Adsorption lowers the activation energy of the reaction
The concentration of reactant molecules at the active centres of the catalyst becomes high due to adsorption.
In the process of adsorption, the activation energy of the molecules becomes large
Position of non-polar and polar parts in micelle is
Polar at outer surface but non-polar at inner surface
Polar at inner surface but non-polar at outer surface
Distributed all over the surface
Present in the surface only
The molecular species or substance,which concentrates or accumulates at the surface is termed as ________
