Which one of the following is not a correct match?

Options

A. `{:("Polymer" " " "Monomer(s)":}`
`{:("Teflon" " " "Tetra fluoroethylene":}`
B. `{:("Polymer" " " "Monomer(s)":}`
`{:("Pierce glass" " " "Methyl methacrylate":}`
C. `{:("Polymer" " " "Monomer(s)":}`
`{:("Buna-S" " " "Styrene,1,3-butadiene":}`
D. `{:("Polymer" " " "Monomer(s)":}`
`{:("Thiokol" " " "Sodium tetrasulphide":}`

Answer

To solve the question regarding which of the following is not a correct match between polymers and their respective monomer units, we will analyze each option step by step.

### Step 1: Identify the Polymers and Their Monomers
We need to look at the given polymers and their corresponding monomers. The question implies that there are several pairs to evaluate.

### Step 2: Analyze Each Pair
1. **Teflon**: The monomer is tetrafluoroethylene (CF2=CF2). Upon polymerization, it forms a polymer represented as (CF2)n, which is indeed Teflon. **This is a correct match.**

2. **Polymethyl Methacrylate**: The monomer is methyl methacrylate (CH2=C(CH3)COOCH3). When polymerized, it forms polymethyl methacrylate (-(C5H8O2)n). This is known as Plexiglass or Perspex. **This is also a correct match.**

3. **Buna-S**: This is a copolymer made from styrene and 1,3-butadiene. The polymerization of these two monomers results in a copolymer that has a phenyl group. **This is a correct match.**

4. **Thiocole**: The monomer mentioned is ethylene dichloride. However, the polymerization process described involves sodium tetrasulfide, which does not correspond to a single monomer unit. The description indicates that both monomers should be present for it to be a correct match, but only one is given. **This is not a correct match.**

### Conclusion
Based on the analysis, the fourth option regarding Thiocole is the incorrect match.

### Final Answer
The option that is not a correct match is the one involving Thiocole.

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