I. Teflon: \[C{{F}_{2}}=C{{F}_{2}}\] |
II. Natural rubber: \[C{{H}_{2}}=\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,-CH=C{{H}_{2}}\] |
III. Nylon. 66: \[N{{H}_{2}}-{{(C{{H}_{2}})}_{5}}-COOH\] |
IV. Perspex : \[C{{H}_{2}}=CC\,{{l}_{2}}\] |
A) I and II
B) II and III
C) III and IV
D) I and IV
Correct Answer: A
Solution :
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