Match the column and choose correct option:
`{:((A) "Smoke ",P.,"foam"),((B)"Butter",Q.,"emulsion"),((C)"Hair cream ",R.,"aerosol"),((D)"Whipped cream",S. ,"gel"):}`

Options

A. A-P,B-S, C-Q, D_R
B. A-R, B-Q, C-S, D-P
C. A-R, B-S, C-Q, D-P
D. A-S, B-P, C-R, D-Q

Answer

To solve the matching question, we need to identify the correct pairs from the given options. Let's analyze each item in Column A and match it with the appropriate item in Column B.

### Step-by-Step Solution:

1. **Identify the nature of "Smoke":**
- Smoke is a colloidal system where solid particles are dispersed in a gas. This is known as an aerosol.
- **Match:** A (Smoke) = R (Aerosol)

2. **Identify the nature of "Butter":**
- Butter is a type of emulsion, specifically a water-in-oil emulsion, where water droplets are dispersed in fat.
- **Match:** B (Butter) = S (Gel)

3. **Identify the nature of "Hair Cream":**
- Hair cream is also an emulsion, where both the dispersed phase and the dispersion medium are liquids.
- **Match:** C (Hair Cream) = Q (Emulsion)

4. **Identify the nature of "Whipped Cream":**
- Whipped cream is a foam, which is a colloidal system where gas bubbles are dispersed in a liquid.
- **Match:** D (Whipped Cream) = P (Foam)

### Final Matches:
- A (Smoke) = R (Aerosol)
- B (Butter) = S (Gel)
- C (Hair Cream) = Q (Emulsion)
- D (Whipped Cream) = P (Foam)

### Conclusion:
The correct option is: **A - R, B - S, C - Q, D - P**