polymer, Day2, CH101

An example of copolymer is

• Teflon

• Nylon-6,6

• Polystyrene

• PVC

The letter S in Buna-S rubber means

• Sulphur

• Sodium

• Styrene

• Selenium

Example of thermosetting plastic is

• PVC

• Nylon

• Polythene

• Bakelite

Which one is semi synthetic polymer?

• Cellulose

• PVC

• Protein

• Cellulosics

Natural silk is

• Polyester

• Polyacid

• Polyisoprenene

• none