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Q. No.Which of the following is/are a colligative property?
(a) Optical activity
(b) Elevation in boiling point
(c) Osmotic pressure
(d) Density
(a) Optical activity
(b) Elevation in boiling point
(c) Osmotic pressure
(d) Density
| 1. | Only (a) | 2. | (a) and (d) |
| 3. | (b), (c), and (d) | 4. | (b) and (c) |
Subtopic: Introduction & Colligative properties |
89%
Level 1: 80%+
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Match List-I with List-II:
| List-I (Types of Solutions) |
List-II (Common Examples) |
||
| A. | Gas in Gas | I. | Solution of hydrogen in palladium |
| B. | Solid in Gas | II. | Mixture of oxygen and nitrogen gas |
| C. | Gas in Liquid | III. | Camphor in nitrogen gas |
| D. | Gas in Solid | IV. | Oxygen dissolved in water |
| Options: | A | B | C | D |
| 1. | II | III | IV | I |
| 2. | II | I | IV | III |
| 3. | II | IV | III | I |
| 4. | II | IV | I | III |
Subtopic: Introduction & Colligative properties |
86%
Level 1: 80%+
Hints
Given below are two statements:
| Assertion (A): | An increase in surface area increases the rate of evaporation. |
| Reason (R): | Stronger the intermolecular attraction forces, faster the rate of evaporation at a given 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: Introduction & Colligative properties |
79%
Level 2: 60%+
Hints
Molarity of a solution depends on temperature. The correct reason for this is:
| 1. | Volume depends on temperature and molarity involves volume. |
| 2. | Molarity involves non-volatile solutes while all other terms involve volatile solutes. |
| 3. | Number of moles of solute changes with a change in temperature. |
| 4. | Molarity is used for polar solvents only. |
Subtopic: Concentration Terms & Henry's Law |
90%
Level 1: 80%+
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Determine the molarity of the solution when 120 g of urea (molar mass = 60 g mol⁻¹) is dissolved in 1000 g of water to form a solution of density 1.15 g mL⁻¹.
1. 4.78 M
2. 6.00 M
3. 2.05 M
4. 9.22 M
1. 4.78 M
2. 6.00 M
3. 2.05 M
4. 9.22 M
Subtopic: Concentration Terms & Henry's Law |
85%
Level 1: 80%+
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Two hydrochloric acid solutions, 750 mL of 0.5 M HCl and 250 mL of 2.0 M HCl, are mixed. The molarity of the resulting solution is:
1. 0.875 M
2. 1.00 M
3. 1.75 M
4. 0.975 M
Subtopic: Concentration Terms & Henry's Law |
90%
Level 1: 80%+
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Which of the following is dependent on temperature?
1. Molality
2. Molarity
3. Mole fraction
4. Weight percentage
Subtopic: Concentration Terms & Henry's Law |
91%
Level 1: 80%+
NEET - 2017
Hints
To avoid bends, as well as, the toxic effects of high concentrations of nitrogen, the air in the scuba tank is diluted with:
1. CO2
2. NO
3. He
4. Ne
1. CO2
2. NO
3. He
4. Ne
Subtopic: Concentration Terms & Henry's Law |
88%
Level 1: 80%+
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What volume of 8.00 M HCl solution is required to prepare 150 mL of 1.60 M HCl solution?
1. 30.0 mL2. 24.0 mL
3. 18.8 mL
4. 12.0 mL
Subtopic: Concentration Terms & Henry's Law |
86%
Level 1: 80%+
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A soft drink contains dissolved CO₂ at a concentration of 0.01 M. If the volume of the soft drink is 300 mL, the mass of CO₂ present in the solution is:
1. 0.132 g
2. 0.481 g
3. 0.312 g
4. 0.190 g
1. 0.132 g
2. 0.481 g
3. 0.312 g
4. 0.190 g
Subtopic: Concentration Terms & Henry's Law |
87%
Level 1: 80%+
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