A) \[HgS{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\]
B) \[C{{u}_{2}}C{{l}_{2}}\]
C) \[C{{u}_{2}}C{{l}_{2}}+N{{H}_{4}}Cl\]
D) \[C{{u}_{2}}C{{l}_{2}}+N{{H}_{4}}OH\]
Correct Answer: C
Solution :
\[\underset{acetylene}{\mathop{2HC\equiv CH}}\,\xrightarrow[N{{H}_{4}}Cl]{C{{u}_{2}}C{{l}_{2}}}\underset{vinyl\text{ }acetylene}{\mathop{{{H}_{2}}C=CH-C\equiv CH}}\,\] \[\xrightarrow[{}]{HCl}\underset{chloroprene}{\mathop{C{{H}_{2}}-CH-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}}}\,\xrightarrow[{}]{polymerisation}\] \[\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,neoprene \\ (synthetic\text{ }rubber) \end{smallmatrix}}{\mathop{-\left[ C{{H}_{2}}-CH=\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}} \right]{{-}_{n}}}}\,\]
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