- 1(current)
Q. No.The correct statements among the following are :
| a. | Mixing two oppositely charged sols neutralizes their charges and stabilizes the colloid. |
| b. | The presence of equal and similar charges on colloidal particles provides stability to the colloids. |
| c. | Any amount of dispersed liquid can be added to the emulsion without destabilizing it. |
| d. | Brownian movement stabilizes sols. |
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)
Subtopic: Â Emulsions |
 52%
Level 3: 35%-60%
Hints
Match the items given in Column I and Column II.
| Column I | Column II |
| A. Protective colloid | 1. FeCl3 + NaOH |
| B. Liquid-liquid colloid | 2. Lyophilic colloids |
| C. Positively charged colloid | 3. Emulsion |
| D. Negatively charged colloid | 4. FeCl3 + hot water |
Codes
| A | B | C | D | |
| 1. | 3 | 2 | 4 | 1 |
| 2. | 1 | 4 | 3 | 2 |
| 3. | 2 | 3 | 4 | 1 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Â Emulsions |
 89%
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
Match the types of colloidal systems given in Column I with the names given in Column II.
| Column I | Column II |
| A. Solid in Liquid | 1. Foam |
| B. Liquid in solid | 2. Sol |
| C. Liquid in Liquid | 3. Gel |
| D. Gas in Liquid | 4. Emulsion |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Â Emulsions |
 90%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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