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
The process of removing an adsorbed substance from a surface on which it is adsorbed is known as _____________
adsorption
absorption
adhesion
desorption
Which of the following forms cationic micelles above certain concentration?
Sodium ethyl suhphate
Sodium acetate
Urea
Cetyl trimethyl ammonium bromide
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
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
_________have no interfaces.
Solids
liquids
gases
Water and kerosene
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
If a beam of light is passed through true solution, then it is
visible
scatter
not visible
none of these
The molecular species or substance,which concentrates or accumulates at the surface is termed as ________
absorbate
adsorbate
adsorbent
absorbent
The Langmuir adsorption isotherm is deduced by using the assumption that
the adsorption takes place in multi -layers
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
