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# Which of the following is a copolymer of glycine?

$\begin{array}{1 1}(a)\;\text{Nylon-66}&(b)\; \text{Buna-S}\\(c)\;\text{Nylon-2-Nylon-6}&(d)\;\text{Nylon-6}\end{array}$

Nylon-2-Nylon-6 is a polyamide copolymer of glycine $(NH_2-CH_2-COOH)$ and aminocapronic acid $(NH_2-(CH_2)_5COOH)$
Hence (c) is the correct answer.