- 1(current)
Q. No.| Assertion (A): | At high altitudes, the atmospheric pressure is low. |
| Reason (R): | Liquids at high altitudes boil at higher temperatures in comparison to that at sea level. |
| 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 |
51%
Level 3: 35%-60%
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Choose the correct statement from the following:
| 1. | Nitric acid (68%) and water (32%) mixture is an example of the minimum boiling azeotrope. |
| 2. | Osmosis can be reversed if pressure lower than the osmotic pressure is applied to the solution. |
| 3. | As compared to other colligative properties, the magnitude of osmotic pressure is large even for very dilute solutions. |
| 4. | The condition of anoxia in mountain climbers is an application of Raoult's law. |
Subtopic: Introduction & Colligative properties | Azeotrope | Concentration Terms & Henry's Law |
Level 3: 35%-60%
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40 cm3 of a solution of sodium hydroxide is exactly neutralized by 25 cm3 of 0.40 mol L–1 sulphuric acid.
2NaOH + H2SO4 → Na2SO4 + 2H2O
What is the concentration, in g L–1, of the sodium hydroxide solution?
[Molecular mass value: NaOH = 40]
1. 20 gL-1
2. 5 gL-1
3. 0.25 gL-1
4. 10 gL-1
2NaOH + H2SO4 → Na2SO4 + 2H2O
What is the concentration, in g L–1, of the sodium hydroxide solution?
[Molecular mass value: NaOH = 40]
1. 20 gL-1
2. 5 gL-1
3. 0.25 gL-1
4. 10 gL-1
Subtopic: Concentration Terms & Henry's Law |
Level 3: 35%-60%
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Henry’s law constant for CO2 in water is 1.67 × 108 Pa at 298 K. The quantity of CO2 in 500 mL of soda water when packed under 2.5 atm CO2 pressure at 298 K is:
| 1. | 1.24 g | 2. | 1.45 g |
| 3. | 1.65 g | 4. | 1.85 g |
Subtopic: Concentration Terms & Henry's Law |
Level 3: 35%-60%
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
What is the molality of Na+ in a solution containing 3.00 g NaCl (M=58.4), 9.00 g glucose (M=180.0), and 168 g H2O (M=18.0)?
1. 5.50 × 10-3 m
2. 0.285 m
3. 0.306 m
4. 0.777 m
1. 5.50 × 10-3 m
2. 0.285 m
3. 0.306 m
4. 0.777 m
Subtopic: Concentration Terms & Henry's Law |
Level 3: 35%-60%
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Hints
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Which of the following is the correct statement about Henry's law?
| 1. | The gas in contact with the liquid should behave as an ideal gas. |
| 2. | There should not be any chemical interaction between the gas and the liquid. |
| 3. | The pressure applied should be high. |
| 4. | All of the above. |
Subtopic: Concentration Terms & Henry's Law |
Level 4: Below 35%
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