- Thermoplastics soften and become pliable upon heating. - Thermosetting plastics remain rigid upon heating. - The bottle not softening with hot water indicates it is not a thermoplastic.
When hot water is placed into an empty water bottle, the bottle keeps its shape and does not soften. What type of plastic is the water bottle made from?
Asked in UPSC CDS 1 2019 · Topic: Polymer (Classification of polymers (based on source, structure, polymerization mechanism, thermal response))
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