Which is used in the manufacture of plastic

1.	Which is used in the manufacture of plastic
A.	\[C{{H}_{2}}=CHCl\]
B.	\[CH\equiv CH\]
C.	\[C{{H}_{2}}=CH-C{{H}_{2}}I\]
D.	\[CC{{l}_{4}}\]
Answer» B. \[CH\equiv CH\]

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Which is used in the manufacture of plastic

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