Neet Solved Paper 2013 Question 41
Question: Which is the monomer of neoprene in the following?
Options:
A) $ CH _2=CH-C\equiv CH $
B) $ CH _2=\underset{\begin{smallmatrix} | \\ CH _3 \end{smallmatrix}}{\mathop{C}},-CH=CH _2 $
C) $ CH _2=\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}},-CH=CH _2 $
D) $ CH _2=CH-CH=CH _2 $
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Answer:
Correct Answer: C
Solution:
Neoprene is synthetic rubber and is a polymer of chloroprene which is chemically 2-chlorobuta-1, 3-diene.
$ \underset{Chloroprene}{\mathop{nC{H_2}\text{=}\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}},-CH,\text{=},C{H_2}}},\xrightarrow[{}]{{}}\underset{Neoprene}{\mathop{-{{[ C{H_2}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}},=CH-C{H_2} ]} _{n}}}},- $
