_____________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
desorption
Sorption
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
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
Distributed all over the surface
Present in the surface only
If a beam of light is passed through true solution, then it is
visible
scatter
not visible
none of these
Which one of the following forms micelles in aqueous solution above certain concentration?
Urea
Dodecyl trimethyl ammonium chloride
Pyridium chloride
Glucose
The Langmuir adsorption isotherm is deduced by using the asumption that ____________ .
the adsorption takes place in multilayers
the adsorption sites are equivalent in their ability to absorb the particles
the heat of adsorption varies with coverage
the adsorbed molecules varies with each other
Which of the following forms cationic micelles above certain concentration?
Sodium ethyl suhphate
Sodium acetate
Cetyl trimethyl ammonium bromide
For adsorption of a gas on a solid, the plot of log x/m vs log p is linear with slope equal to (n being a whole number)
k
log k
n
1/n
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
