Question

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

• A. CH₂=CHCl
• B. CCl₂=CCl₂
• C.
• D. CF₂=CF₂

Answer 1

The Correct Option is C

The given question asks which monomer, upon polymerization, produces the polymer known as neoprene. Let's analyze the options to identify the correct monomer:

1. CH₂=CHCl (Vinyl chloride): This is the monomer used to produce polyvinyl chloride (PVC), not neoprene.
2. CCl₂=CCl₂ (Tetrachloroethylene): This is unrelated to the production of neoprene. It is not used to polymerize neoprene.
3. CH₂=C(Cl)–CH=CH₂ (Chloroprene): This compound is also known as chloroprene, and it is the monomer used to produce neoprene through polymerization. The double bond allows for polymer chain formation, creating the neoprene polymer.
4. CF₂=CF₂ (Tetrafluoroethylene): This is used to produce polytetrafluoroethylene (PTFE), known as Teflon, not neoprene.

Based on the analysis above, the correct monomer that gives neoprene upon polymerization is chloroprene (CH₂=C(Cl)–CH=CH₂). Neoprene, also known as polychloroprene, is a type of synthetic rubber used extensively in various applications due to its stability and flexibility.