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)
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 |
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 |
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 |