3
MCQ (Single Correct Answer)
Which of the following interface cannot be obtained?
A
Liquid-liquid
B
Solid-liquid
C
Liquid-gas
D
Gas-gas
4
MCQ (Single Correct Answer)
The term 'sorption' stands for ............ .
A
absorption
B
adsorption
C
Both absorption and adsorption
D
desorption
5
MCQ (Single Correct Answer)
Extent of physisorption of a gas increases with .......... .
A
increase in temperature
B
decrease in temperature
C
decrease in surface area of adsorbent
D
decrease in strength of van der Waals' forces
6
MCQ (Single Correct Answer)
Extent of adsorption of absorbate from solution phase increases with ........... .
A
increase in amount of adsorbate in solution
B
decrease in surface area of adsorbent
C
increase in temperature of solution
D
decrease in amount of adsorbate in solution
7
MCQ (Single Correct Answer)
Which one of the following is not applicable to the phenomenon of adsorption?
A
$\Delta H>0$
B
$\Delta \mathrm{G}<0$
C
$\Delta S<0$
D
$\Delta H<0$