In which of the polymer the monomers used are not correctly given

Options

A. Polyme `rarr` Nylon -6,6, Monomers `rarr` adipic acid, hexamethylene diamine
B. Polymer `rarr` Bakelite , Monomers `rarr` formaldehyde , phenol
C. Polymer `rarr` Buna - N , Monomers `rarr` buta - 1,3 - diene , nitrobenzene
D. Polymer `rarr` Buna - S, Monomers `rarr` buta 1,3- diene , styrene

Answer

To determine which polymer has incorrectly matched monomers, we will analyze each option provided in the question.

### Step 1: Analyze Nylon 6-6
- **Monomers**: Adipic acid (HOOC-(CH2)4-COOH) and hexamethylenediamine (NH2-(CH2)6-NH2).
- **Conclusion**: The monomers for Nylon 6-6 are correctly matched.

### Step 2: Analyze Bacillite
- **Monomers**: Phenol (C6H5OH) and formaldehyde (HCHO).
- **Conclusion**: The monomers for Bacillite are correctly matched.

### Step 3: Analyze Buna N
- **Monomers**: Buta-1,3-Diene (C4H6) and Acrylonitrile (C3H3N).
- **Conclusion**: The monomers for Buna N are correctly matched.

### Step 4: Analyze Buna S
- **Monomers**: Buta-1,3-Diene (C4H6) and Styrene (C8H8).
- **Conclusion**: The monomers for Buna S are correctly matched.

### Step 5: Identify the Incorrect Match
- In the analysis, we find that all the polymers have correctly matched monomers except for the mention of Nitrobenzene in the context of Buna N. Buna N should consist of Buta-1,3-Diene and Acrylonitrile, not Nitrobenzene.

### Final Answer
The polymer with incorrectly matched monomers is **Buna N**.