Whichof the following statement is not correctly matched?

Options

A. Nylon`6,6`:

B. Neoprene :

C. Terylene :

D. `PMMA :

Answer

To solve the question of which statement is not correctly matched, we will analyze the given polymers and their corresponding monomers or structures step by step.

### Step 1: Identify the Polymers and Their Monomers
We have the following polymers listed:
1. Nylon 66
2. Neoprene
3. Terylene
4. Polymethyl methacrylate (PMMA)

### Step 2: Analyze Each Polymer
1. **Nylon 66**:
- **Monomers**: Hexamethylene diamine and adipic acid.
- **Structure**: Nylon 66 is formed through a condensation reaction between these two monomers, resulting in an amide linkage.
- **Conclusion**: This match is correct.

2. **Neoprene**:
- **Monomer**: Chloroprene.
- **Structure**: Neoprene is a synthetic rubber formed from the polymerization of chloroprene.
- **Conclusion**: This match is correct.

3. **Terylene**:
- **Monomers**: Ethylene glycol and terephthalic acid.
- **Structure**: Terylene (also known as Dacron) is formed through a condensation reaction between ethylene glycol and terephthalic acid, resulting in an ester linkage.
- **Conclusion**: The question indicates that there is a misprint in the formula provided for Terylene, which is incorrect. The correct structure involves an oxygen atom that may have been omitted in the question.

4. **Polymethyl methacrylate (PMMA)**:
- **Monomer**: Methyl methacrylate.
- **Structure**: PMMA is formed through the polymerization of methyl methacrylate.
- **Conclusion**: This match is correct.

### Step 3: Identify the Incorrect Match
From our analysis:
- The incorrect match is **Terylene**, as the provided formula in the question lacks an oxygen atom, making it incorrect.

### Final Answer
The statement that is not correctly matched is **Terylene**.

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