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Q. No.Consider the two statements:
Statement I:
At 20 °C, the molality of KCl solution is 'X' m, and on decreasing temperature to -10 °C molality remains unchanged.
Statement II:
On changing temperature mass remains unchanged.
1.
Both Statement I and Statement II are True.
2.
Both Statement I and Statement II are False.
3.
Statement I is True, and Statement II is False.
4.
Statement I is False, and Statement II is True.
Subtopic: Elevation of Boiling Point | Van’t Hoff Factor |
84%
From NCERT
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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%
From NCERT
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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 |
86%
From NCERT
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NEET 2025 - Target Batch
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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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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%
From NCERT
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| Assertion (A): | An ideal solution obeys Raoult's law. |
| Reason (R): | In an ideal solution, solute-solute as well as solvent-solvent, interactions are similar to solute-solvent interactions. |
| 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: Raoult's Law |
87%
From NCERT
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One mole of sugar is dissolved in three moles of water at 298 K. The relative lowering of vapour pressure is:
| 1. | 0.25 | 2. | 0.15 |
| 3. | 0.50 | 4. | 0.33 |
Subtopic: Relative Lowering of Vapour Pressure |
75%
From NCERT
NEET - 2022
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One molal solution contains 0.5 moles of a solute in:
| 1. | 1000 g of solvent | 2. | 500 mL of solvent |
| 3. | 500 g of solvent | 4. | 100 mL of solvent |
Subtopic: Concentration Terms & Henry's Law |
74%
From NCERT
NEET - 2022
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Acetic acid dimerises in benzene solution. The value of Van't Hoff factor (i) for the dimerization of acetic acid is 0.6. Therefore, the percentage of dimerization of acetic acid will be:
| 1. | 20% | 2. | 40% |
| 3. | 60% | 4. | 80% |
Subtopic: Van’t Hoff Factor |
61%
From NCERT
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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%
From NCERT
NEET - 2023
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