Q. No.Which of the following factor (s) affect the solubility of a gaseous solute in the fixed volume of liquid solvent?
(i) Nature of solute
(ii) Temperature
(iii) Pressure
a. (i) and (iii) at constant T
b. (i) and (ii) at constant p
c. (ii) and (iii)
d. Only (iii)
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The strength of intermolecular forces between two benzene molecules is approximately equivalent to that between two toluene molecules.
| a. | ΔHmix= zero |
| b. | ΔVmix = Zero |
| c. | They will form a minimum boiling azeotrope |
| d. | They will not form an ideal solution |
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)
Relative lowering of vapor pressure is a colligative property because
| a. | It depends on the concentration of a non-electrolyte solute in a solution and does not depend on the nature of the solute molecules |
| b. | It depends on the number of particles of electrolyte solute in a solution and does not depend on the nature of the solute particles |
| c. | It depends on the concentration of a non-electrolyte solute in solution as well as on the nature of the solute molecules |
| d. | It depends on the concentration of an electrolyte or non-electrolyte solute in solution as well as on the nature of solute molecules |
The correct choice among the given is -
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Van't Hoff factor (i) is given by the expression:
a.
b.
c.
d.
The correct choice among the given options are:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Isotonic solutions must have the same-
a. Solute
b. Density
c. Elevation in boiling point
d. Depression in freezing point
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following binary mixtures will have the same composition in the liquid and vapour phase?
a. Benzene-toluene
b. Water-nitric acid
c. Water-ethanol
d. n-Hexane-n-heptane
The correct choice among the given is -
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The correct choice among the given regarding isotonic solutions is /are -
a. Solute and solvent both are same
b. Osmotic pressure is same
c. Solute and solvent may or may not be same
d. Solute is always same solvent may be different
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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 |
Colligative properties are observed when -
| a. | A non-volatile solid is dissolved in a volatile liquid |
| b. | A non-volatile liquid is dissolved in another volatile liquid |
| c. | A gas is dissolved in a non-volatile liquid |
| d. | A volatile liquid is dissolved in another volatile liquid |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Match the laws given in Column I with expressions given in Column II.
| Column I | Column II |
| A. Raoult’s law | 1. = CRT |
| B. Osmotic pressure | 2. |
| C. Elevation of boiling point | 3. |
| D. Depression in freezing point | 4. |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 3 | 1 | 4 | 2 |
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