Answer: 3-Hydroxybutyrate and 3-hydroxyvalerate.
- A 3-Hydroxybutyrate and 3-hydroxyvalerate
- B Ethylene glycol and valeric acid
- C Caprolactam and valerolactam
- D Glycerol and valeric acid
Correct answer: A. 3-Hydroxybutyrate and 3-hydroxyvalerate
Explanation: PHBV is a copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate produced by bacteria.
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.