Plastics which when moulded once, cannot be softened by heating. Such plastics are called ____
A. Polythene
B. Thermoplastics
C. Polyster
D. Thermosetting plastics
Answer:D
Plastics which when moulded once, cannot be softened by heating. Such plastics are called ____
A. Polythene B. Thermoplastics C. Polyster D. Thermosetting plastics