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A thermoset differs from a thermoplastic in having

  • A.no additives of any kind
  • B.a crosslinked network
  • C.a much higher molecular weight
  • D.a crystalline structure throughout

Answer: B

The crosslinks make the whole article a single molecule, so it cannot flow at any temperature. Bakelite and epoxy are familiar examples, and neither can be melted and reused. Curing is irreversible once it has taken place.

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