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Q. No.At a given temperature, osmotic pressure of a concentrated solution of a substance:
1.
is higher than that of a dilute solution.
2.
is lower than that of a dilute solution.
3.
is same as that of a dilute solution.
4.
cannot be compared with osmotic pressure of dilute solution.
Subtopic: Osmosis & Osmotic Pressure |
73%
From NCERT
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The incorrect statement among the following is:
| 1. | Two different solutions of sucrose of the same molality prepared in different solvents will have the same depression in freezing point. |
| 2. | The osmotic pressure of a solution is given by the equation π = CRT (where C is the molarity of the solution) |
| 3. | Decreasing order of osmotic pressure for 0.01 M aqueous solutions of BaCl2 > KCl > CH3COOH > sucrose |
| 4. | The vapour pressure exerted by a volatile component of a solution is directly proportional to its mole fraction in the solution. |
Subtopic: Depression of Freezing Point |
64%
From NCERT
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The incorrect statement among the following is:
| 1. | Units of atmospheric pressure and osmotic pressure are the same. |
| 2. | In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration. |
| 3. | The value of molal depression constant depends on nature of solvent. |
| 4. | Relative lowering of vapour pressure, is a dimensionless quantity. |
Subtopic: Relative Lowering of Vapour Pressure | Elevation of Boiling Point | Depression of Freezing Point | Osmosis & Osmotic Pressure |
66%
From NCERT
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The value of Henry's constant KH -
1. Increases with increase in temperature.
2. Decreases with increase in temperature.
3. Remains constant.
4. First increases then decreases.
Subtopic: Concentration Terms & Henry's Law |
63%
From NCERT
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Three aqueous solutions of NaCl are labelled as ‘A', ‘B’ and ‘C with concentrations 0.1 M, 0.01 M and 0.001 M, respectively. The value of van’t Hoff factor for these solutions will be in the order of -
1. iA < iB < iC
2. iA > iB > iC
3. iA = iB = iC
4. iA < iB > iC
Subtopic: Van’t Hoff Factor |
From NCERT
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4 L of 0.02 M aqueous solution of NaCl was diluted by adding 1 L of water. The molarity of the resultant solution is -
| 1. | 0.004 M | 2. | 0.008 M |
| 3. | 0.012 M | 4. | 0.016 M |
Subtopic: Concentration Terms & Henry's Law |
66%
From NCERT
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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 |
Subtopic: Raoult's Law |
78%
From NCERT
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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 |
Subtopic: Elevation of Boiling Point | Depression of Freezing Point |
93%
From NCERT
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Match the terms given in Column I with expressions given in Column II.
| Column I | Column II |
| A. Mass percentage |
1. \(\text{Number of moles of the solute component} \over \text{Volume of solution in litres}\) |
| B. Volume percentage |
2. \(\text{Number of moles of the solute component} \over \text{Mass of solvent in kilograms}\) |
| C. Molarity | 3. \({\text{Volume of the solute component in solution} \over \text{Total volume of solution}} \times 100\) |
| D. Molality | 4. \({\text{Mass of the solute component in solution} \over \text{Total Mass of solution}} \times 100\) |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 1 | 2 |
Subtopic: Concentration Terms & Henry's Law |
90%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Molarity of a solution in liquid state changes with temperature. |
| Reason (R): | The volume of a solution changes with change in temperature. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Concentration Terms & Henry's Law |
88%
From NCERT
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