question_answer 35)

  Which of the following polymers, need atleast one diene monomer for their preparation ? (a) Dacron                           (b) Buna-S (c) Neoprene                     (d) No volac

Answer:

   (B,C) Monomers of Buna-S are : 1, 3-butadiene and styrene and monomer of neoprene is chloroprene i.e., 2-chloro-l, 3-butadiene.