Some polymers are given below :
PVC, Orion, Dacron, Polymethyl acrylic acid (PMAA), Polymethyl methacrylate (PMMA), Buna-S-rubber, Neoprene, Bakellite, Glyptal, Nylon-6, Gutta percha rubber.
How many of these are ''COPOLYMERS''?

Explanation

To determine how many of the given polymers are copolymers, we first need to understand what a copolymer is. A copolymer is a polymer that is made from two or more different types of monomers. Let's analyze each polymer listed in the question to identify which ones are copolymers.

1. **PVC (Polyvinyl Chloride)**:
- Monomer: Vinyl chloride
- Type: Homopolymer (only one type of monomer)

2. **Orion (Polyacrylonitrile)**:
- Monomer: Acrylonitrile
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