Q97 / 200 · NEET 2003 · Chemistry
Which one of the following monomers gives the polymer neoprene on polymerization?
- A$\mathrm{CH}_2=\mathrm{CHCl}$
- B$\mathrm{CCl}_2=\mathrm{CCl}_2$
- Correct answerC

- D$\mathrm{CF}_2=\mathrm{CF}_2$
Solution
2-chloro but-2-ene (or Chloroprene) is the monomer of neoprene.

Related Theory Neoprene elastomer was first synthesized in the 1930 s and became the first synthetic elastomer to provide significant advantages over natural rubber. Caution Neoprene is not a condensation polymer. It is an additional polymer. Neoprene is formed by the free radical or monomer polymerization of chloroprene.

Related Theory Neoprene elastomer was first synthesized in the 1930 s and became the first synthetic elastomer to provide significant advantages over natural rubber. Caution Neoprene is not a condensation polymer. It is an additional polymer. Neoprene is formed by the free radical or monomer polymerization of chloroprene.
Hence, the correct answer is option: 'C'.