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Q. No.Which of the following aqueous solutions of electrolytes will exhibit the least elevation in boiling point?
1.
0.05 M NaCl
2.
0.1 M KCl
3.
0.1 M MgSO4
4.
1 M NaCl
Subtopic: Van’t Hoff Factor |
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NEET - 2023
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Which aqueous solution exhibits the largest freezing point depression?
1. 1.0 m KBr
2. 0.75 m C6H12O6
3. 0.5 m MgCl2
4. 0.25 m Ga2(SO4)3
1. 1.0 m KBr
2. 0.75 m C6H12O6
3. 0.5 m MgCl2
4. 0.25 m Ga2(SO4)3
Subtopic: Depression of Freezing Point |
59%
From NCERT
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Consider the two statements:
| Statement I: | The value of Kf can be calculated by using \( K_{f} \ = \ \frac{R\times M_{1}\times T_{f}^{2}}{1000\times \Delta _{fus}H}\) |
| Statement II: | Unit of Ebullioscopic constant(Kb) is K kg L-1. |
| 1. | Statement I is True, Statement II is False. |
| 2. | Statement I is False, Statement II is True. |
| 3. | Both Statement I and Statement II are True. |
| 4. | Both Statement I and Statement II are False. |
Subtopic: Elevation of Boiling Point |
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The Henry Law constants of four gases P, Q, R, and S in water are 38.5, 10.42, 1.26, and 2.11 bar at 298 K and 1 atm. Identify the gas having maximum solubility in water.
| 1. | P | 2. | Q |
| 3. | R | 4. | S |
Subtopic: Concentration Terms & Henry's Law |
85%
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Consider the following statements
The correct statements are:
| A. | Solubility of gases in liquids decreases with a rise in temperature. |
| B. | To avoid bends, the tanks used by scuba divers are filled with air diluted with helium. |
| C. | Temperature does not have a significant effect on the solubility of solids in liquids. |
The correct statements are:
| 1. | A and B | 2. | B and C |
| 3. | A and C | 4. | A, B and C |
Subtopic: Introduction & Colligative properties |
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Given below are two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R):
In light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | Helium is used to dilute oxygen in the diving apparatus. |
| Reason (R): | Helium has a high solubility in O2. |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Concentration Terms & Henry's Law |
51%
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NEET - 2023
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Negative deviation from Raoult's law is shown by-
1. Bromoethane and chloroethane
2. Ethanol and acetone
3. Chloroform and acetone
4. Benzene and toluene
1. Bromoethane and chloroethane
2. Ethanol and acetone
3. Chloroform and acetone
4. Benzene and toluene
Subtopic: Azeotrope |
83%
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KH value for some gases at the same temperature 'T' are given:
KH is Henry's Law constant in water. The order of their solubility in water is :
| gas | KH/k bar |
| Ar | 40.3 |
| CO2 | 1.67 |
| HCHO | 1.83 × 10–5 |
| CH4 | 0.413 |
| 1. | Ar < CO2 < CH4 < HCHO |
| 2. | Ar < CH4 < CO2 < HCHO |
| 3. | HCHO < CO2 < CH4 < Ar |
| 4. | HCHO < CH4 < CO2 < Ar |
Subtopic: Concentration Terms & Henry's Law |
76%
From NCERT
NEET - 2022
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Match List I with List II
Choose the correct answer from the options given below:
| List I | List II | ||
| Types of Solutions | 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 |
87%
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What is the concentration of a glucose solution in intravenous injection in gram/lit which is isotonic with blood solution which has osmotic pressure 7.93 bar at 300 K ?
1. 62 g/L
2. 0.58 g/L
3. 0.62 g/L
4. 58 g/L
1. 62 g/L
2. 0.58 g/L
3. 0.62 g/L
4. 58 g/L
Subtopic: Osmosis & Osmotic Pressure |
59%
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