Have an account?
Skip to Content
Build your own quiz
Suggestions for you
15 questions
Show Answers
See Preview
- 1. Multiple Choice
Mole fraction of glycerine C3H5(OH)3 in solution containing 36 g of water and 46 g of glycerine is
0.46
0.40
0.20
0.36
- 2. Multiple Choice
Out of molality (m), molarity (M), formality (F) and mole fraction (x), those which are independent of temperature are
M, m
F, x
m, x
M, x
- 3. Multiple Choice
Which of the following condition is not satisfied by an ideal solution?
ΔHmixing = 0
ΔVmixing = 0
Raoult’s Law is obeyed
Formation of an azeotropic mixture
- 4. Multiple Choice
The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol. The mixture shows
no deviation from Raoult’s Law.
positive deviation from Raoult’s Law.
negative deviation from Raoult’s Law.
that the solution is unsaturated.
- 5. Multiple Choice
Which has the lowest boiling point at 1 atm pressure?
0.1 M KCl
(b) 0.1 M Urea
(c) 0.1 M CaCl2
(d) 0.1 M A1Cl3
- 6. Multiple Choice
Osmotic pressure of a solution is 0.0821 atm at a temperature of 300 K. The concentration in moles/litre will be
0.33
0.666
0.3 × 10-2
3
- 7. Multiple Choice
People add sodium chloride to water while boiling eggs. This is to
decrease the boiling point.
increase the boiling point.
prevent the breaking of eggs.
make eggs tasty.
- 8. Multiple Choice
The van’t Hoff factor (i) accounts for
degree of solubilisation of solute.
the extent of dissociation of solute.
the extent of dissolution of solute.
the degree of decomposition of solution.
- 9. Multiple Choice
The molal elevation constant depends upon
nature of solute.
nature of the solvent.
vapour pressure of the solution.
enthalpy change.
- 10. Multiple Choice
The mole fraction of the solute in one molal aqueous solution is
0.009
0.018
0.027
0.036
- 11. Multiple Choice
5 cm3 of acetone is added to 100 cm3 of water, the vapour pressure of water over the solution will be
equal to the vapour pressure of pure water.
less than the vapour pressure of pure water.
greater than the vapour pressure of pure water.
very large.
- 12. Multiple Choice
The density of a solution prepared by dissolving 129g of urea in 1000g of water is 1.15g/ml. The molarity of this solution is
1.78M
1.02M
2.05M
0.50M
- 13. Multiple Choice
If at a certain temperature the vapour pressure of pure water is 25 mm Hg and that of a very dilute aqueous urea solution is 24.5 mm Hg, the molality of the solution is:
0.02
1.2
1.11
0.08
- 14. Multiple Choice
The relationship between osmotic pressure at 273K when 10g glucose (P1), 10g urea (P2) and 10g sucrose (P3) are dissolved in 250ml of water is
P1 > P2 > P3
P3 > P1 > P2
P2 > P1 > P3
P2 > P3 > P1
- 15. Multiple Choice
Two liquids X and Y form an ideal solution. At 300K vapour pressure of the solution containing 1mol of X and 3 mol of Y is 550 mm Hg. At the same temperature, if 1 mol of Y is further added to this solution, the vapour pressure of the solution increases by 10 mm Hg. Vapour pressure of X and Y in the pure states will be respectively
300 and 400
400 and 600
500 and 600
200 and 300
- Answer choicesTagsAnswer choicesTags