Answer: Unbreakable crockery and laminates.
- A Unbreakable crockery and laminates
- B Flexible food packaging films requiring low rigidity
- C Bulletproof vests requiring high tensile fibre strength
- D Electrical wire insulation requiring high flexibility
Correct answer: A. Unbreakable crockery and laminates
Explanation: Melamine-formaldehyde thermosetting resin is used for unbreakable dishes, laminates, and flooring.
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.