NEET BIOLOGY

Detailed explanation-1: -A thermoplastic, or thermosoftening plastic, is a form of plastic polymer that is pliable or moldable at a certain high temperature and solidifies when cooled. Most thermoplastics weigh strongly molecularly.

Detailed explanation-2: -Thermoplastic polymers can melt at specific temperatures and can be shaped and reshaped (through reheating) according to the mold. Reprocessing thermoplastic polymers can lose its physical properties due to a breakage of polymeric chains; it is best to not recycle thermoplastics.

Detailed explanation-3: -A thermosetting polymer is a permanent setting polymer as it gets hardened and sets during moulding process and cannot be softened again. The examples are bakelite and melamine-formaldehyde polymers.

Detailed explanation-4: -Thermoplastics in sheet form can be heated gently to between 160°C and 180°C and then bent into shape. If the sheet is held in position while it cools it will remain in its new shape while it is at room temperature or below.