Match the following
`{:("List-I", "List-II"),((A) "physical adsorption" ,(1)(x)/(m)=kp^(1//n)),((B)"chemisorption",(2) "Bulk phenomenon"),((C) "Fruendlich adsorption isotherm " , (3) "multilayered "),((D)"Absorption",(4) "unilayered "):}`

Options

A. `{:(A,B,C,D),(1,2,3,4):}`
B. `{:(A,B,C,D),(3,4,1,2):}`
C. `{:(A,B,C,D),(2,3,1,4):}`
D. `{:(A,B,C,D),(3,4,2,1):}`

Answer

To solve the matching question, we need to analyze each term in List-I and find the corresponding term in List-II based on their definitions and characteristics.

### Step-by-Step Solution:

1. **Identify Physical Adsorption**:
- Physical adsorption occurs due to intermolecular forces, specifically Van der Waals forces. It allows for the formation of multiple layers of adsorbate on the adsorbent.
- **Match**: Physical adsorption (A) → Multilayered (3).

2. **Identify Chemisorption**:
- Chemisorption involves the formation of chemical bonds between the adsorbate and the adsorbent, resulting in a single layer of adsorbate.
- **Match**: Chemisorption (B) → Unilayered (4).

3. **Identify Freundlich Adsorption Isotherm**:
- The Freundlich adsorption isotherm describes the relationship between the amount of gas adsorbed and the equilibrium pressure, represented by the equation \( \frac{x}{m} = kp^{\frac{1}{n}} \).
- **Match**: Freundlich adsorption isotherm (C) → \( \frac{x}{m} = kp^{\frac{1}{n}} \) (1).

4. **Identify Absorption**:
- Absorption is a process where atoms, molecules, or ions enter the bulk phase of a material, which can be liquid or solid. This is a bulk phenomenon.
- **Match**: Absorption (D) → Bulk phenomenon (2).

### Final Matches:
- A → 3 (Physical adsorption → Multilayered)
- B → 4 (Chemisorption → Unilayered)
- C → 1 (Freundlich adsorption isotherm → \( \frac{x}{m} = kp^{\frac{1}{n}} \))
- D → 2 (Absorption → Bulk phenomenon)

### Summary of Matches:
- (A) Physical adsorption → (3) Multilayered
- (B) Chemisorption → (4) Unilayered
- (C) Freundlich adsorption isotherm → (1) \( \frac{x}{m} = kp^{\frac{1}{n}} \)
- (D) Absorption → (2) Bulk phenomenon