Answer: Glycine and amino caproic acid.
- A Glycine and amino caproic acid
- B Adipic acid and hexamethylenediamine
- C Lactic acid and glycolic acid
- D Hydroxybutyric and hydroxyvaleric acid
Correct answer: A. Glycine and amino caproic acid
Explanation: Nylon-2-nylon-6 is an alternating polyamide of glycine (H<sub>2</sub>N-CH<sub>2</sub>-COOH) and amino caproic acid, and is biodegradable.
Addition polymerisation simply links monomers containing a double bond with nothing left over, while condensation polymerisation joins two different monomers through a reaction (often forming an ester or amide bond) that releases a small molecule like water at each step.
Concept context
Large molecules made of repeating monomer units. Covers addition and condensation polymerisation, natural and synthetic polymers (nylon, PVC, Bakelite, natural rubber), and their real-world industrial applications.