The correct curve for Freundlich's adsorption isotherm is:
1. | 2. | ||
3. | 4. |
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 |
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. |
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. |
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. |
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. |
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 |
The method of formation of the solution is given in Column I. Match it with the type of solution given in Column II.
Column I | Column II |
(A) Sulphur vapours passed through cold water | 1. Normal electrolyte solution |
(B) Soap mixed with water above critical micelle concentration | 2. Molecular colloids |
(C) White of egg whipped with water | 3. Associated colloid |
(D) Soap mixed with water below critical micelle concentration | 4. Macromolecular colloids |
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 |
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 |
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 |