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Q. No.The Henry's law constant KH values of three gases (A, B, C) in water are 145, 2 × 10–5 and 35 kbar, respectively. The solubility of these gases in water follow the order:
1. B > C > A
2. A > C > B
3. A > B > C
4. B > A > C
1. B > C > A
2. A > C > B
3. A > B > C
4. B > A > C
Subtopic: Concentration Terms & Henry's Law |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe plot of osmotic pressure \((\pi)\) vs concentration \((mol L^{-1})\) for a solution gives a straight line with slope 25.73 L bar mol-1. The temperature at which osmotic pressure measurement is done is: \((\text {Use} \left.\mathrm{R}=0.083 \mathrm{~L} \mathrm{bar} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)\)
1. 310°C
2. 25.73°C
3. 12.05 °C
4, 37°C
1. 310°C
2. 25.73°C
3. 12.05 °C
4, 37°C
Subtopic: Osmosis & Osmotic Pressure |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following pair of aqueous solutions will have the same value of osmotic pressure? (Assume complete dissociation in aqueous solution)
1. \(0.1~ \mathrm{M}~ \mathrm{BaCl}_2 \text { and } 0.2 ~\mathrm{M} ~\mathrm{K}_2 \mathrm{SO}_4\)
2. \(0.1~ \mathrm{M}~ \mathrm{Na}_3 \mathrm{PO}_4 \text { and } 0.1 ~\mathrm{M}~ \mathrm{K}_2 \mathrm{SO}_4\)
3. \(0.2~ \mathrm{M}~ \mathrm{NaCl} \text { and } 0.1 ~\mathrm{M} ~\mathrm{K}_2 \mathrm{SO}_4\)
4. \(0.2 ~\mathrm{M} ~\mathrm{NaCl} \text { and } 0.1~ \mathrm{M} ~\mathrm{K}_3\left[\mathrm{Fe}(\mathrm{CN})_6\right]\)
1. \(0.1~ \mathrm{M}~ \mathrm{BaCl}_2 \text { and } 0.2 ~\mathrm{M} ~\mathrm{K}_2 \mathrm{SO}_4\)
2. \(0.1~ \mathrm{M}~ \mathrm{Na}_3 \mathrm{PO}_4 \text { and } 0.1 ~\mathrm{M}~ \mathrm{K}_2 \mathrm{SO}_4\)
3. \(0.2~ \mathrm{M}~ \mathrm{NaCl} \text { and } 0.1 ~\mathrm{M} ~\mathrm{K}_2 \mathrm{SO}_4\)
4. \(0.2 ~\mathrm{M} ~\mathrm{NaCl} \text { and } 0.1~ \mathrm{M} ~\mathrm{K}_3\left[\mathrm{Fe}(\mathrm{CN})_6\right]\)
Subtopic: Osmosis & Osmotic Pressure |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch List-I with List-II
Choose the correct answer from the options given below:
1. A-II, B-I, C-III, D-IV
2. A-I, B-II, C-III, D-IV
3. A-III, B-II, C-I, D-IV
4. A-II, B-I, C-III, D-V
| List-I (Reagent) |
List-II (Name of the reaction) |
||
| A. | \(Liquid \rightleftharpoons Vapour\) | I. | Melting point |
| B. | \(Solid \rightleftharpoons Liquid\) | II. | Boiling point |
| C. | \(Solid \rightleftharpoons Vapour\) | III. | Sublimation point |
| D. | \(\small {Solute (solid) \rightleftharpoons Solute (solution)}\) | IV. | Saturated solution |
| V. | Unsaturated solution |
1. A-II, B-I, C-III, D-IV
2. A-I, B-II, C-III, D-IV
3. A-III, B-II, C-I, D-IV
4. A-II, B-I, C-III, D-V
Subtopic: Introduction & Colligative properties |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen 5 g of non-volatile non-electrolyte solute is dissolved in 100 g of a certain solvent, the freezing point of the solvent decreases by 0.25 K. The molar mass of the solute is:
\([\text{K}_f \) of the given solvent \( =1.2 \mathrm{K ~kg}~ \mathrm{mol}^{-1}] \)
\([\text{K}_f \) of the given solvent \( =1.2 \mathrm{K ~kg}~ \mathrm{mol}^{-1}] \)
| 1. | \(242.8 \mathrm{~g} \mathrm{~mol}^{-1}\) | 2. | \(238.2 \mathrm{~g} \mathrm{~mol}^{-1}\) |
| 3. | \(241.8 \mathrm{~g} \mathrm{~mol}^{-1}\) | 4. | \(240.0 \mathrm{~g} \mathrm{~mol}^{-1}\) |
Subtopic: Depression of Freezing Point |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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 MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOne 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOne 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyKH 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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