- 1(current)
Q. No.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 |
Among the following surfactant molecules, the surfactant with the lowest CMC in aqueous solution at ambient conditions is:
1. CH3(CH2)15N+(CH3)3Br-
2. CH3(CH2)11OSO3- Na+
3. CH3(CH2)6COO-Na+
4. CH3(CH2)11N+(CH3)3Br-
The charge present on micelles is:
1. Negative charge.
2. Positive charge.
3. Both negative and positive charges.
4. None of the above.
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 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 |
Correct statement about emulsion is:
| 1. | The dispersed phase and dispersion medium are liquids. |
| 2. | The dispersed phase and dispersion medium are solids. |
| 3. | The dispersed phase and dispersion medium are gases. |
| 4. | The dispersed phase are solids and dispersion medium are liquids. |
Emulsions can be used as:
1. For cleansing action of soaps.
2. For digestion of fats in the intestines.
3. As antiseptics and disinfectants.
4. All of the above.
An emulsion is stabilised by:
1. Emulsifiers.
2. Peptizing agent.
3. Biochemical catalysts.
4. None of the above.
- 1(current)
Q. No.
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