Question

1.
The correct choice, for the box, in the following sequence, is-
thermoplastic : PVC; thermosetting plastic : ?
nylon
polystyrene
bakelite
polythene​

Answer 1

Answer:

polystyrene may be the answer of this question.

Answer 2

Thermoplastic : PVC :: Thermosetting plastic : Bakelite

Thermoplastic

• It can be synthesized through a procedure which is called addition polymerization.
• It is formed by injection molding, blow molding, rotational molding, thermoforming process, and extrusion process.
• Examples are polystyrene, nylon, acrylic, Teflon, etc.

Thermosetting plastic

• It can be synthesized by any condensation polymerization.
• It is formed by reaction injection molding or by compression molding.
• Examples are vulcanized rubber, bakelite, polyurethane, epoxy resin, vinyl ester resin, etc.