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Which one of the following sets forms the biodegradable polymer?

1. CH2 = CH—CN and CH2 = CH—CH2
2. H2N—CH2—COOH and H2N—(CH2)5—COOH
3. HO—CH2—CH2—OH and HOOC—CH2—COOH
4. CH = CH2 and CH2 = CH—CH = CH2

Correct answer: H2N—CH2—COOH and H2N—(CH2)5—COOH

Solution

Biodegradable polymers are typically formed from monomers like amino acids or hydroxy acids. H2N—CH2—COOH (glycine) and H2N—(CH2)5—COOH (aminocaproic acid) can polymerize to form biodegradable polyamides like nylon-2-nylon-6.

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