11. Specific gravity of the plastics is usually
12. The materials such as lead and barium, which are added with polymers to minimize the effect of heat, sunlight and ozone are called as
13. The plastics which soften when heat is applied with or without pressure, but requires cooling to set them to shape are called as
14. Why are the plasticisers added with polymers?
MCQ Multiple Choice Questions and Answers on Plastics
Plastics Question and Answer