Which of the following is not correctly matched ?

Options

A. Neoprene : `[--CH_(2)-underset(Cl)underset(|)C=CH-CH_(2)--]_(n)`
B. Nylon - 66 : `-[--NH-(CH_(2))_(6)-NH-CO-(CH_(2))_(4)-overset(O)overset(||)C--]_(n)`
C. (c) Terylene :
D. PMMA : `[{:(" "CH_(3)),(" |"),(--CH_(2)-C--),(" |"),(" "COOCH_(3)):}]_(n)`

Explanation

To determine which of the following is not correctly matched with its corresponding polymer, we will analyze each option provided in the question.

### Step 1: Analyze Neoprene
- **Monomer**: Chloroprene (C4H5Cl)
- **Structure of Chloroprene**:
- CH2=C(CH3)-CH=CHCl
- **Polymerization**: When chloroprene undergoes polymerization, it forms neoprene.
- **Conclusion**: Neoprene is correctly matched with chloroprene.

### Step 2: Analyze Nylon 6
- **Monomer**: Caprolactam (C6H11NO)
- **Polymerization**: Caprolactam undergoes ring-opening polymerization to form Nylon 6.
- **Conclusion**: Nylon 6 is correctly matched with caprolactam.

### Step 3: Analyze Nylon 66
- **Monomers**: Hexamethylenediamine and Adipic acid
- **Structure**:
- Hexamethylenediamine: NH2-(CH2)6-NH2
- Adipic acid: HOOC-(CH2)4-COOH
- **Polymerization**: The reaction between hexamethylenediamine and adipic acid forms Nylon 66.
- **Conclusion**: Nylon 66 is correctly matched with hexamethylenediamine and adipic acid.

### Step 4: Analyze Terylene
- **Monomers**: Terephthalic acid and Ethylene glycol
- **Structure**:
- Terephthalic acid: C6H4(COOH)2
- Ethylene glycol: HO-CH2-CH2-OH
- **Polymerization**: The reaction between terephthalic acid and ethylene glycol forms Terylene (Polyethylene terephthalate).
- **Conclusion**: Terylene is correctly matched with terephthalic acid and ethylene glycol.

### Step 5: Analyze Polymethyl Methacrylate
- **Monomer**: Methyl methacrylate
- **Structure**:
- Methyl methacrylate: C4H6O2
- **Polymerization**: Polymerization of methyl methacrylate leads to polymethyl methacrylate.
- **Conclusion**: Polymethyl methacrylate is correctly matched with methyl methacrylate.

### Final Conclusion
After analyzing all the options, we find that all the given pairs are correctly matched. Therefore, if the question asks for which is not correctly matched, it appears that there may be an error in the options provided, as all are matched correctly.