The lowest boiling point, if concentration is fixed at 0.1 M in aqueous solution, is given by which of the following solutions?

a. K₂SO₄

b. NaCl

c. Urea

d. Glucose

1. a, b

2. b, c

3. c, d

4. d, a

A solution is prepared by dissolving 18 g of glucose in 1000 g of water. When this solution is cooled to –0.2 °C,
some ice separates. Calculate the amount of ice that separates from the solution.

[Freezing point depression constant of water, K_f(H₂O) = 1.86 K molal^-1]

An aqueous solution of hydrochloric acid -

1. Obeys Raoult's law

2. Shows negative deviations from Raoult's law

3. Shows positive deviations from Raoult's law

4. Obeys Henry's law at all compositions

The vapour pressure of a pure liquid solvent A is 0.80 atm. When a non-volatile substance B is added to the solvent, its vapour pressure drops to 0.60 atm.
Mole fraction of the component B in the solution is:

Which of the following 0.1 M aqueous solutions will have the lowest freezing point?

Given that the pH of a 0.1 M monobasic acid is 2, what is the osmotic pressure at a given temperature T?

1. 0.1RT

2. 0.11RT

3. 1.1RT

4. 0.01RT

The relationship between osmotic pressure at 273 K, when 10 gm glucose (P₁), 10 gm urea (P₂), and 10 gm sucrose (P₃) are dissolved in 250 ml of water, is-

1. P₁ > P₂ > P₃

2. P₃ > P₁ > P₂

3. P₂ > P₁ > P₃

4. P₂ > P₃ > P₁

If 'A' contains 2 % NaCl and is separated by a semi permeable membrane from 'B', which contains 10 % NaCl, then the event that will occur is

1. NaCl will flow from 'A' to 'B'

2. NaCl will flow from 'B' to 'A'

3. Water will flow from 'A' to 'B'

4. Water will flow from 'B' to 'A'

The mole(s) of K₂SO₄ to be dissolved in 12 moles of water to lower its vapor pressure by 10 mm of Hg at a temperature at which vapor pressure of pure water is 50 mm of Hg is :

The salt that possesses the highest freezing point

1. 0.01 M NaCl

2. 0.05 M Urea

3. 0.01 M MgCl₂

4. 0.02 M NaCl