question_answer

Which is a polymer of three different monomers?

A) ABS                             

B) SBR

C) NBR                             

D) Nylon-2, 6

Correct Answer: A

Solution :

[a] ABS is acrylonitrile-butadiene-styrene rubber which is obtained by copolymerization of acrylonitrile 1, 3-butadiene and styrene. \[\underset{Acrylonitrile}{\mathop{C{{H}_{2}}=\underset{CN}{\mathop{\underset{|}{\mathop{C}}\,}}\,H+}}\,C{{H}_{2}}=\underset{\begin{smallmatrix}  CH=C{{H}_{2}} \\  1,3-\,Butadiene \end{smallmatrix}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H+\underset{Styrene}{\mathop{C{{H}_{2}}=CH{{C}_{6}}{{H}_{5}}}}\,\xrightarrow{{}}\]