A) butadiene
B) isoprene
C) neoprene
D) None of these
Correct Answer: B
Solution :
Natural rubber is additive polymer of isoprene or 2-methyl 1,3 butadiene \[nC{{H}_{2}}=\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,-CH=C{{H}_{2}}\xrightarrow{{}}\]\[-\left[ \underset{\text{natural}\,\text{rubber}}{\mathop{C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,=CH-C{{H}_{2}}}}\, \right]{{-}_{n}}\]
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