24
MCQ (Single Correct Answer)
Which of the following process is not responsible for the presence of electric charge on the sol particles?
A
Electron capture by sol particles
B
Adsorption of ionic species from solution
C
Formation of Helmholtz electrical double layer
D
Absorption of ionic species from solution
25
MCQ (Single Correct Answer)
Which of the following phenomenon is applicable to the process shown in the figure?
A
Absorption
B
Adsorption
C
Coagulation
D
Emulsification
26
MCQ (Multiple Correct Answer)
Which of the following options are correct?
A
Micelle formation by soap in aqueous solution is possible at all temperatures
B
Micelle formation by soap in aqueous solution occurs above a particular concentration
C
On dilution of soap solution micelles may revert to individual ions
D
Soap solution behaves as a normal strong electrolyte at all concentrations
27
MCQ (Multiple Correct Answer)
Which of the following statements are correct about solid catalyst?
A
Same reactants may give different products by using different catalysts
B
Catalyst does not change $\Delta H$ of reaction
C
Catalyst is required in large quantities to catalyse reactions
D
Catalytic activity of a solid catalyst does not depend upon the strength of chemisorption
28
MCQ (Multiple Correct Answer)
Freundlich adsorption isotherm is given by the expression $\frac{x}{m}=\mathrm{kp}^\frac{1}{n}$ Which of the following conclusions can be drawn from this expression?
A
When $\frac{1}{n}=0$, the adsorption is independent of pressure
B
When $\frac{1}{n}=0$, the adsorption is directly proportional to pressure
C
When $n=0, \frac{x}{m}$ vs $p$ graph is a line parallel to $x$-axis
D
When $n=0$, plot of $\frac{X}{m}$ vs $p$ is a curve