A) \[{{\text{H}}_{\text{2}}}\text{C=}\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,-\text{COOC}{{\text{H}}_{\text{3}}}\]
B) \[{{\text{H}}_{\text{2}}}\text{C=}\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,-\text{COO}{{\text{C}}_{\text{2}}}{{\text{H}}_{5}}\]
C) \[{{\text{H}}_{\text{2}}}\text{C=}\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,-\text{CN}\]
D) \[{{\text{H}}_{\text{2}}}\text{C=}\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,-\text{COOC}{{\text{H}}_{\text{3}}}\]
Correct Answer: C
Solution :
Polyacrylonitrile (PAN), acrilan or orlon \[\underset{Acrylonitrile}{\mathop{nC{{H}_{2}}=\overset{\begin{smallmatrix} CN \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,\xrightarrow[{}]{{}}(C{{H}_{2}}-\underset{orlon}{\mathop{\overset{\begin{smallmatrix} CN \\ | \end{smallmatrix}}{\mathop{CN{{)}_{n}}-}}\,}}\,\] It is hard used in preparing cloths, carpets.
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