Question

The monomer $(G=MeorCl)$ when treated with Zieglar - Natta catalyst undergo polymerisation as shown in the figure. Which of the following statement is not true considering the process given above?

• A. The general class of polymer formed is known as homopolymer
• B. The polymer obtained is stereoregular
• C. Buna-N can be prepared using above process
• D. Synthetic rubber can be formed by above process using $1,3$ - butadiene

Answer 1

Answer: (C)

Buna-N can be prepared using above process

The polymerisation reaction given above uses only one monomer. Hence, the general class of polymer formed is homopolymer.

Stereoregulars are polymers having an ordered arrangement of pendant groups along the chain. The stereoregularity of the polymer is determined by the catalyst used to prepare it. Using Zieglar-Natta catalyst, polymer obtained is stereoregular.

Synthetic rubber can also be formed by the given process using the monomer 1, 3-butadiene.

Buna-N can not be prepared using given process. Buna-N is formed by polymerization of Styrene and Butadiene.

So, A, B and D are correct statements, and C is incorrect option.

Hence, the correct option is C.