- 1(current)
Q. No.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: Â Colloidal Solution |
 62%
Level 2: 60%+
Hints
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: Â Colloidal Solution |
 89%
Level 1: 80%+
Hints
Links
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: Â Colloidal Solution |
 79%
Level 2: 60%+
Hints
Links
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: Â Colloidal Solution |
 60%
Level 2: 60%+
Hints
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: Â Colloidal Solution |
 66%
Level 2: 60%+
NEET - 2022
Hints
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: Â Colloidal Solution |
 68%
Level 2: 60%+
Hints
The correct statements among the following are:
| a. | Micelle formation by soap in an aqueous solution is possible at all temperatures |
| b. | Micelle formation by soap in an aqueous solution occurs above a particular concentration |
| 3. | On dilution of soap solution micelles may revert to individual ions |
| 4. | Soap solution behaves like a normal strong electrolyte at all concentrations |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Subtopic: Â Colloidal Solution |
 84%
Level 1: 80%+
Hints
Match the items of Column I and Column II.
|
Column I |
Column II |
|
A. Whipped cream B. Pumice stone C. Milk D. Paints |
1. Dispersion of liquid in liquid 2. Dispersion of solid in liquid 3. Dispersion of gas in solid 4. Dispersion of gas in liquid |
Codes
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 3 | 1 | 2 |
Subtopic: Â Colloidal Solution |
 86%
Level 1: 80%+
Hints
Match the items in Column I and Column II.
| Column I | Column II |
| A. Dialysis | 1. Cleansing action of soap |
| B. Peptization | 2. Coagulation |
| C. Emulsification | 3. Colloidal sol formation |
| D. Electrophoresis | 4. Purification |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 1 | 2 |
Subtopic: Â Colloidal Solution |Â Emulsions |
 83%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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