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Q. No.Select the correct option based on statements below:
Assertion (A):
When methyl alcohol is added to water, boiling point of water increases.
Reason (R):
When a volatile solute is added to a volatile solvent, elevation in boiling point is observed.
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.
Both (A) and (R) are False.
Subtopic: Elevation of Boiling Point | Raoult's Law |
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Select the correct option based on statements below:
| Assertion (A): | When NaCl is added to water a depression in freezing point is observed. |
| Reason (R): | The lowering of vapour pressure of a solution causes depression in the freezing point. |
| 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: Depression of Freezing Point |
71%
From NCERT
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Given below are two statements:
| Assertion (A): | When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side. |
| Reason (R): | Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration solution. |
| 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: Osmosis & Osmotic Pressure |
55%
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%
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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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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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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)
Subtopic: Introduction & Colligative properties |
72%
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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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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)
Subtopic: Osmosis & Osmotic Pressure |
78%
From NCERT
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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)
Subtopic: Azeotrope |
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