Answer: Very high conversion (>99%) of functional groups.
- A Very high conversion (>99%) of functional groups
- B Low conversion of around 20% of the functional groups
- C Moderate conversion near 50% of the functional groups present
- D Any conversion level, since chain length is independent of conversion
Correct answer: A. Very high conversion (>99%) of functional groups
Explanation: Carothers equation shows Xn = 1/(1-p); only at p>0.99 do you get degree of polymerisation >100.
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.