Structures of some common polymers are given. Which one is not correctly presented?




As we learnt in
Neoprene -
- Formed by free radical polymerization of chloroprene ( 2-chloro-1, 3-butadiene ).
- Homopolymer
- wherein
- Superior resistance to vegetable and mineral oils.
- Used in manufacturing conveyor belts, gaskets, hoses.
Neoprene is a polymer of chloroprene. structure

Option 1)

Correct
Option 2)

Incorrect
Option 3)

Incorrect
Option 4)

Incorrect