Define themoplastic and thermosetting polymers. Given one example of each.
Thermoplastics: These are the plastics which get deformed easily on heating and can be bent easily.
Examples: PVC and Polythene are used for manufacturing combs, toys, car grills and various type of containers.
Thermosettingplastics: These are the plastics which when molded once, cannot be softed by heating.
Examples: Bakelite and Melamine. Bakelite is a poor conductor of heat and light. Bakelites are used for making electrical switches, handles of various utensils etc. Melamine is resistant to fire and can tolerate heat better than other plastics. Melamines are used for making floor tiles, kitchen wares and fabrics.