A) isoprene
B) adipic acid
C) vinyl chloride
D) acrylonitrile
Correct Answer: A
Solution :
Key Idea: Monomer polymerise to form polymers. [a] \[\underset{\begin{smallmatrix} isoprene \\ or \\ 2-methyl\text{ }1,3-butadiene \end{smallmatrix}}{\mathop{C{{H}_{2}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,-CH=C{{H}_{2}}}}\,\] It is monomer of natural rubber. [b] Adipic acid is copolymer of nylon-66. [c] Vinyl chloride is monomer of PVC. [d] Acrylonitrile is monomer of PAN.
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