Question

Which among following monomers is used to prepare PVC?

• A.

  

• B.

  

• C.

  

• D.

  

Hint:

Common vinylic monomers to memorize for exams:
Vinyl chloride ($\text{CH}_2\text{=CHCl}$) $\rightarrow$ PVC
Styrene ($\text{Ph-CH=CH}_2$) $\rightarrow$ Polystyrene
Tetrafluoroethylene ($\text{CF}_2\text{=CF}_2$) $\rightarrow$ Teflon
Acrylonitrile ($\text{CH}_2\text{=CH-CN}$) $\rightarrow$ PAN (Orlon)

Answer 1

The Correct Option is A

Step 1: Read the name PVC.
PVC stands for polyvinyl chloride, so the monomer must be vinyl chloride.

Step 2: Draw vinyl chloride.
The vinyl group is $\text{CH}_2\text{=CH-}$, and with a chlorine it becomes $\text{CH}_2\text{=CH-Cl}$.

Step 3: Match the structure.
The option showing $\text{CH}_2\text{=CH-Cl}$ is the right monomer, which is option 1.
\[ \boxed{\text{CH}_2\text{=CH-Cl (Option 1)}} \]