For a binary ideal liquid solution, the curve that represents the variation in total vapor pressure versus composition of the solution is:

a.		b.
c.		d.

The correct option is:

1.	a and b	2.	b and c
3.	c and d	4.	a and d

An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. The molar mass of the solute is -

1. 53.50 g mol^-1

2. 43.5 kg mol^-1

3. 22.6 kg mol-1

4. 41.35 g mol^-1

The strength of intermolecular forces between two benzene molecules is approximately equivalent to that between two toluene molecules.

Identify the incorrect statements (from a to d given above) regarding a mixture of benzene and toluene:

1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

The value of Henry's constant, K_H is ......... .

1.  Greater for gases with higher solubility.

2.  Greater for gases with lower solubility.

3.  Constant for all gases.

4.  Not related to the solubility of gases.

The value of Henry's constant K_H -

1. Increases with increase in temperature.

2. Decreases with increase in temperature.

3. Remains constant.

4. First increases then decreases.

At a given temperature, osmotic pressure of a concentrated solution of a substance:

An unripe mango placed in a concentrated salt solution to prepare pickle shrivels because -

1. It gains water due to osmosis.

2. It loses water due to reverse osmosis.

3. It gains water due to reverse osmosis.

4. It loses water due to osmosis.

A solution that has the highest boiling point among the following is -

1. 1.0 M NaOH

2. 1.0 M Na₂SO₄ 

3. 1.0 M NH₄NO₃

4. 1.0 M KNO₃

Colligative properties depend on:

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 -

1. Saturated.

2. Supersaturated.

3. Unsaturated.

4. Concentrated.