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Question:

Which of the following is a biodegradable polymer?

−[HN−(CH2)6NHCO−(CH2)4−O||C]−n

−[HN−(CH2)5−O||C]−n

−[HN−(CH2)5CONH−CH2−O||C]−n

Solution:

The polymer shown in option (D) is a biodegradable polymer. This polymer is known as Nylon-2-nylon-6. It is a copolymer of glycine and ω-amino caproic acid. It contains polyamide linkages. Hence, option D is correct.