CBSE
Multiple Choice QuestionsOn which of the following properties does the coagulating power of an ion depend?
The magnitude of the charge on the ion alone
Size of the ion alone
The sign of the charge on the ion alone
Both magnitude and sign of the charge on the ion
The protecting power of lyophilic colloidal sol is expressed in terms of
Coagulation value
Gold number
Critical micelle concentration
Critical micelle concentration
Given van der Waals constant for NH3, H2, O2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied?
NH3
H2
CO2
O2
The ease of adsorption of the hydrated alkali metal ions on an ion exchange resins follows the order
Li+ > K+ >Na+> Rb+
Rb+ < K+ < Na+ < Li+
K+ >Na+> Rb+ > Li+
K+ >Na+> Rb+ > Li+
The Langmuir adsorption isotherm is deduced using the assumption:
the adsorption takes place in multilayers
The adsorption sites are equivalent in their ability to adsorb the particles
The adsorbed molecules interact with each other
The adsorbed molecules interact with each other
A plot of log x/m versus log p for the adsorption of a gas on a solid gives a straight line with slope equal to:
-log k
n
1/n
1/n
Which property of colloids is not dependent on the charge on colloidal particles?
Coagulation
Electrophoresis
Electro-osmosis
Electro-osmosis
Which property of colloidal solution is independent of charge on the colloidal particles?
Coagulation
Electrophoresis
Electroosmosis
Tyndall effect
Which of the following is not applicable to the phenomenon of adsorption?
ΔH> 0
ΔG<0
ΔS<0
ΔH<0
Fog is a colloidal solution of
Gas in liquid
Solid in gas
Gas in gas
Gas in gas
