A solution containing components A and B follows Raoult's law, when
A-B attraction force is greater than A - A and B- B
A - B attraction force is less than A - A and B - B
A- B attraction force remains same as A - A and B - B
Volume of solution is different from sum of volumes of solute and solvent
Which of the following 0.10 M aqueous solution will have the lowest freezing point?
Al2(SO4)3
C5H10O5
KI
C12H22O11
The vapour pressure, at a given temperature, of an ideal solution containing 0.2 mole of a non volatile solute and 0.8 mole of solvent is 60 mm of Hg. The vapour pressure of the pure solvent at the same temperature is.
150 mm of Hg
60 mm of Hg
75 mm of Hg
120 mm of Hg
If 0.1 M solution of glucose and 0.1 M solution of urea are placed on two sides of the semipermeable membrane to equal heights, then it will be correct to say that.
there will be no net movement across the membrane
Glucose will flow towards urea solution
Urea will flow towards glucose solution
Water will flow from urea solution to glucose
In cold countries, ethylene glycol is added to water in the radiators of cars during winter. This results in
Lowering the freezing point
Reducing the specific heat
Reducing the viscosity
Making water a better conductor of electricity
Acetic acid is dissolved in benzene, and the molecular mass is determined from the elevation of boiling point. The molecular mass obtained will be
60
120
180
30
A 5% solution of cane sugar (mol wt = 342) is isotonic with 1% solution of a substance X. The molecular weight of X is
34.2
171.2
68.4
136.8
The van't Hoff factor for an aqueous solution of Al2(SO4)3 is
3
5
9
4
If a hydrated crystal has vapour pressure greater than that of water vapour in the atmosphere, the crystal is
Hygroscopic
Efflorescent
Deliquescent
Phosphorescent
