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Q. No.Given below are two statements:
| Assertion (A): | Powdered substances are more effective adsorbents than their crystalline forms |
| Reason (R): | Powdered substance has more surface area and the extent of adsorption increases with the increase of the surface area of the adsorbent. |
| 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: Adsorption and Absorption |
94%
From NCERT
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Given below are two statements:
| Assertion (A): | Physisorption decrease with the increase in temperature. |
| Reason (R): | Physisorption is exothermic in nature. |
| 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: Adsorption and Absorption |
69%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Detergents with low CMC are more economical to use. |
| Reason (R): | The cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC. |
| 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: Colloidal Solution |
62%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | The coagulation power of Al3+ is more than Na+. |
| Reason (R): | Greater the valency of the flocculating ion added, the greater is its power to cause precipitation (Hardy-Schulze rule) |
| 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: Colloidal Solution |
90%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Colloidal solutions do not show Brownian motion. |
| Reason (R): | Brownian motion is responsible for the stability of sols. |
| 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: Colloidal Solution |
79%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles. |
| Reason (R): | The pore size of the filter paper becomes larger than the size of the colloidal particle. |
| 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: Colloidal Solution |
60%
From NCERT
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | In the coagulation of a negative sol, the flocculating power of the three given ions is in the order Al3+ > Ba2+ > Na+ |
| Statement II: | In the coagulation of a positive sol, the flocculating power of the three given salts is in the order NaCl > Na2SO4 > Na3PO4 |
| 1. | I is incorrect but II is correct. |
| 2. | Both I and II are correct. |
| 3. | Both I and II are incorrect. |
| 4. | I is correct but II is incorrect. |
Subtopic: Colloidal Solution |
67%
From NCERT
NEET - 2022
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Subtopic: Adsorption Isotherm |
64%
From NCERT
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Consider the following graph between (extent of adsorption) and pressure:
What is the correct relation between T1, T2, and T3?
1. T3 < T2 > T1
2. T1 < T2 < T3
3. T1 > T2 > T3
4. None of the above
Subtopic: Adsorption Isotherm |
68%
From NCERT
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Match the statement given in Column I with the phenomenon given in Column II.
| Column I | Column II |
| A. Dispersion medium moves in an electric field | 1. Osmosis |
| B. Solvent molecules pass through a semi-permeable membrane towards the solvent side | 2. Electrophoresis |
| C. Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes | 3. Electroosmosis |
| D. Solvent molecules pass through semi-permeable membranes towards the solution side | 4. Reverse osmosis |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 3 | 4 | 2 | 1 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Colloidal Solution |
68%
From NCERT
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