Question

Which one of the following monomers gives the polymer neoprene on polymerization?

Options

• CF₂ = CF₂

• CH₂ = CHCl

• CCl₂ = CCl₂

• \[\begin{array}{cc}
  \ce{Cl}\phantom{......}\\
  |\phantom{.......}\\
  \ce{CH2 = C - CH = CH2}
  \end{array}\]

Answer 1

\[\begin{array}{cc}
\ce{Cl}\phantom{......}\\
|\phantom{.......}\\
\ce{CH2 = C - CH = CH2}
\end{array}\]

Explanation:

\[\begin{array}{cc}
\phantom{......}\ce{Cl}\phantom{....................................}\ce{Cl}\phantom{.}\\
\phantom{.....}|\phantom{......................................}|\phantom{}\\
\ce{\underset{Chloroprene}{nCH2 = CH - C = CH2} ->[O2 or peroxides] (- CH2 - \underset{Neoprene}{CH = C} - CH2-)_{n}}
\end{array}\]