Match the items of Column I and Column II.
| Column I | Column II | ||
|---|---|---|---|
| A. | Dialysis | 1. | Cleansing action of soap |
| B. | Peptisation | 2. | Coagulation |
| c. | Emulsification | 3. | Colloidal sol formation |
| D. | Electrophoresis | 4. | Purification |
A. $\rightarrow$ (4) B. $\rightarrow(3)$ C. $\rightarrow$ (1) D. $\rightarrow(2)$
A. Purification of colloid can be done by dialysis in which ions/particles are removed from solution through semipermeable membrane.
B. Peptisation is a process in which when small quantity of electrolyte (peptising agent) is added to precipitate. It leads to formation of colloidal solution.
C. The process of removing of oily or greasy dirt from the cloth is done by emulsification.
D. Process of setting of colloidal particle is called coagulation. Electrophoresis is a process in which on applying electric potential to the electrodes dipped in sol, the oppositely charged particles of colloidal solution move towards oppositely charged electrodes, get discharged and precipitated.
Match the items of Column I and Column II.
| Column I | Column II | ||
|---|---|---|---|
| A. | Butter | 1. | Dispersion of liquid in liquid |
| B. | Pumice stone | 2. | Dispersion of solid in liquid |
| c. | Milk | 3. | Dispersion of gas in solid |
| D. | Paints | 4. | Dispersion of liquid in solid |
A. $\rightarrow(4)$ B. $\rightarrow$ (3) C. $\rightarrow(1)$ D. $\rightarrow$ (2)
A. Butter is an example of dispersion of liquid in solid.
B. Pumice stone is an example of dispersion of gas in solid in which gas bubbles are pearced within solid particles.
C. Milk is a dispersion of liquid in liquid in which fats and protein are dissolved in milk.
D. Paint is an example of solid in liquid.
Assertion (A) An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.
Reason (R) Pore size of the filter paper becomes more than the size of colloidal particle.
Assertion (A) Colloidal solution show colligative properties.
Reason (R) Colloidal particles are large in size.
Assertion (A) Colloidal solutions do not show Brownian motion.
Reason (R) Brownian motion is responsible for stability of sols.