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

1. CF2=CF2
2. CH2=CHCl
3. CCl2=CCl2
4. CH2=C−CH=CH2 | Cl

Correct answer: CH2=C−CH=CH2 | Cl

Solution

Neoprene is formed by the polymerization of chloroprene, which has the structure CH2=C−CH=CH2 with a chlorine atom attached to the second carbon.

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