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
When the gas molecules or atoms are held to the solid surface by chemical bonds,the adsorption is termed as______________
Physisorption
Chemisorption
sorption
At the critical micelle concentration (CMC) the surfactant molecules
Decompose
Dissociate
Associate
Become completely soluble
The process of removing an adsorbed substance from a surface on which it is adsorbed is known as _____________
During dialysis
Only solvent molecules can diffuse
Solvent molecules, ions and colloidal particles can diffuse
All kinds of particles can diffuse through the semipermeable membrane
_____________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
Which of the following forms cationic micelles above certain concentration?
Sodium ethyl suhphate
Sodium acetate
Urea
Cetyl trimethyl ammonium bromide
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
The extent of adsorption increases with the increase of __________of the adsorbent.
Pressure
temperature
surface area
quantity
The molecular species or substance,which concentrates or accumulates at the surface is termed as ________
absorbate
adsorbate
adsorbent
absorbent