Match the following `{:(" Column -I"," Column -II "),("(A) Paint"," (p) Solid in dispersed phase"),("(B) Gem stones", " (q) Solid as dispersion medium"),("(C) Cheese"," (r) Liquid as dispersion medium"),("(D) Milk"," (s) Liquid in dispersed phase"):}`

Answer

To solve the matching question, we need to identify the type of colloid in Column I and match it with the correct description in Column II. Let's analyze each option step by step.

### Step 1: Analyze Paint
- **Type of Colloid**: Paint is a type of sol.
- **Disperse Phase**: The disperse phase in paint is solid (pigments).
- **Dispersion Medium**: The dispersion medium is liquid (solvent).
- **Match**: Therefore, Paint (A) can be matched with (p) Solid in dispersed phase and (r) Liquid as dispersion medium.

### Step 2: Analyze Gem Stones
- **Type of Colloid**: Gem stones are solid colloids.
- **Disperse Phase**: The disperse phase is solid (the gem itself).
- **Dispersion Medium**: The dispersion medium is also solid (the matrix in which the gem is embedded).
- **Match**: Thus, Gem stones (B) can be matched with (p) Solid in dispersed phase and (q) Solid as dispersion medium.

### Step 3: Analyze Cheese
- **Type of Colloid**: Cheese is a gel-type colloid.
- **Disperse Phase**: The disperse phase is liquid (the whey).
- **Dispersion Medium**: The dispersion medium is solid (the curd).
- **Match**: Therefore, Cheese (C) can be matched with (s) Liquid in dispersed phase and (q) Solid as dispersion medium.

### Step 4: Analyze Milk
- **Type of Colloid**: Milk is an emulsion.
- **Disperse Phase**: The disperse phase is liquid (fat globules).
- **Dispersion Medium**: The dispersion medium is also liquid (water).
- **Match**: Hence, Milk (D) can be matched with (s) Liquid in dispersed phase and (r) Liquid as dispersion medium.

### Final Matches:
- (A) Paint → (p) Solid in dispersed phase and (r) Liquid as dispersion medium
- (B) Gem stones → (p) Solid in dispersed phase and (q) Solid as dispersion medium
- (C) Cheese → (s) Liquid in dispersed phase and (q) Solid as dispersion medium
- (D) Milk → (s) Liquid in dispersed phase and (r) Liquid as dispersion medium

### Summary of Matches:
- A → p, r
- B → p, q
- C → s, q
- D → s, r