3
MCQ (Single Correct Answer)
At equilibrium the rate of dissolution of a solid solute in a volatile liquid solvent is ............ .
A
less than the rate of crystallisation
B
greater than the rate of crystallisation
C
equal to the rate of crystallisation
D
zero
4
MCQ (Single Correct Answer)
A beaker contains a solution of substance ' $A$ '. Precipitation of substance ' $A$ ' takes place when small amount of ' $A$ ' is added to the solution. The solution is ........... .
A
saturated
B
supersaturated
C
unsaturated
D
concentrated
5
MCQ (Single Correct Answer)
Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon ............ .
A
temperature
B
nature of solute
C
pressure
D
nature of solvent
6
MCQ (Single Correct Answer)
Low concentration of oxygen in the blood and tissues of people living at high altitude is due to ............ .
A
low temperature
B
low atmospheric pressure
C
high atmospheric pressure
D
Both low temperature and high atmospheric pressure
7
MCQ (Single Correct Answer)
Considering the formation, breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raoult's law?
A
Methanol and acetone
B
Chloroform and acetone
C
Nitric acid and water
D
Phenol and aniline