The type of plastic that can be seeded and reshaped without losing its inherent composition

• A. Thermosetting plastics
• B. Theroplastics
• C. Metal
• D. Glass

Answer: (B)

The concept here is how a plastic responds to heat while keeping its basic chemical makeup intact. Thermoplastics soften when heated and can be reshaped, then harden again when cooled. Their polymer chains don’t form permanent bonds during processing, so melting and remolding doesn’t fundamentally change their composition. That reversibility is what lets them be recycled and reformed many times. In contrast, thermosetting plastics cure into a rigid network with permanent crosslinks, so heating them won’t melt and reshape them without breaking the material. Metals and glass aren’t plastics, and while they can be reshaped under heat, they don’t share the same melt-and-reform behavior as thermoplastics.