The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as ___________
absorption
adsorption
desorption
adhesion
Both adsorption and absorption can take place simultaneously,the _______________term is used to describe both the processes.
chemisorption
sorption
Physisorption
Which one of the following forms micelles in aqueous solution above certain concentration?
Urea
Dodecyl trimethyl ammonium chloride
Pyridium chloride
Glucose
Chemisorption is generally ______________in nature.
Irreversible
reversible
temperory
endothermic
The method usually employed for the precipitation of a colloidal solution is
Dialysis
Addition of electrolytes
Diffusion through animal membrane
Condensation
The ability of anion to bring about coagulation of a given colloid depends upon
Its charge
Th sign of the charge alone
The magnitude of its of its charge
Both magnitude and sign of its charge
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
When the gas molecules or atoms are held to the solid surface by chemical bonds,the adsorption is termed as______________
Chemisorption
The extent of adsorption increases with the increase of __________of the adsorbent.
Pressure
temperature
surface area
quantity
_____________arises due to the fact that the surface particles of the adsorbent are not in the same environment as the particles inside the bulk.
Absorption
Adsorption
Sorption
