The molecular species or substance,which concentrates or accumulates at the surface is termed as ________
absorbate
adsorbate
adsorbent
absorbent
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
Which is not correct regarding the adsorption of a gas on surface of solid?
On increasing temperature adsorption increases continuously
Enthalpy and entropy change is negative
Which of the following forms cationic micelles above certain concentration?
Sodium ethyl suhphate
Sodium acetate
Urea
Cetyl trimethyl ammonium bromide
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
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
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
Both adsorption and absorption can take place simultaneously, the term_________is used to describe both the processes.
chemisorption
sorption
Physisorption
