Which of the following is not a monomer of neoprene?

Options

A. Isoprene
B. Chloroprene
C. Vinyl chloride
D. Vinyl acetylene

Answer

To determine which of the following is not a monomer of neoprene, we need to first understand what neoprene is and identify its monomer.

### Step-by-Step Solution:

1. **Define Neoprene**: Neoprene is a type of synthetic rubber. It is produced through the polymerization of a specific monomer.

2. **Identify the Monomer of Neoprene**: The primary monomer used to make neoprene is chloroprene, which has the chemical formula C4H5Cl (or 2-chloro-1,3-butadiene).

3. **Understanding Polymerization**: The process of forming neoprene from chloroprene involves the polymerization of chloroprene molecules. This means that multiple chloroprene units link together to form the long chains characteristic of rubber.

4. **Analyze the Options**: Given a list of options (let's say A, B, C, D), we need to identify which of these is not chloroprene or does not contribute to the formation of neoprene.

5. **Conclusion**: Since chloroprene is the only monomer for neoprene, any option that is not chloroprene is the correct answer to the question.

### Final Answer:
The options that are not monomers of neoprene are A, C, and D (assuming those options do not include chloroprene).

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