JEE Main Chemistry question
Not in JEE Main or NEET syllabus
How many of the following are thermoplastic polymers?
Melamine, bakelite, polystyrene, polyvinyl chloride, teflon, polythene
Answer: 4
Solution
Melamine (melamine-formaldehyde) and bakelite (phenol-formaldehyde) are both heavily cross-linked condensation polymers — thermosets, not thermoplastics. Polystyrene, polyvinyl chloride,
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