- 1(current)
Q. No.Given below are two statements:
In light of the above statements, choose the correct answer from the options given below:
| Statement I: | The mass of a gas dissolved in a given mass of a solvent at any temperature is proportional to the pressure of the gas above the solvent. |
| Statement II: | The rate of dissolution of sugar is equal to the rate of crystallization of sugar at equilibrium. |
In light of the above statements, choose the correct answer from the options given below:
| 1. | Both statement I and statement II are true. |
| 2. | Both statement I and statement II are false. |
| 3. | Statement I is true but statement II is false. |
| 4. | Statement I is false but statement II is false. |
Subtopic: Concentration Terms & Henry's Law |
82%
Level 1: 80%+
Hints
Match concentration expressions in List-I with uses in List-II and select the best match from the codes given:
| List-I (Concentration expression) |
List-II (Uses) |
||
| A. | Mass percentage | I. | Medicine |
| B. | Volume percentage | II. | Concentration of pollutants |
| C. | Mass by volume percentage |
III. | Industrial chemicals |
| D. | Parts per million | IV. | Liquid solutions |
| Options: | A | B | C | D |
| 1. | III | IV | II | I |
| 2. | III | II | IV | I |
| 3. | III | IV | I | II |
| 4. | III | I | II | IV |
Subtopic: Concentration Terms & Henry's Law |
79%
Level 2: 60%+
Hints
Given below are two statements:
| Assertion (A): | The people living at high altitudes or climbers have a high concentration of oxygen in their blood and tissues. |
| Reason (R): | At high altitudes, the partial pressure of oxygen is less than that at the ground 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 |
69%
Level 2: 60%+
Hints
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The solubility of potassium nitrate in water increases with temperature. A saturated solution of potassium nitrate at 80 °C is cooled to 25 °C in a closed container. Which of the following statements is/are correct?
| (A) | The mass of undissolved potassium nitrate will increase. |
| (B) | The concentration of the potassium nitrate solution remains the same. |
| (C) | The total mass of solvent present remains the same. |
| 1. | B and C only | 2. | A and C only |
| 3. | A only | 4. | B only |
Subtopic: Concentration Terms & Henry's Law |
63%
Level 2: 60%+
Hints
- 1(current)
Q. No.
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