Q.Refer to the following table listing for different polymers formed from respective monomer. Identify from the list whether it is copolymer or homopolymer.
Sr. No. -- Monomer -- Polymer

1. -- Ethylene -- Polyethylene
2. -- Vinyl chloride -- Polyvinyl chloride
3. -- Isobutylene -- Polyisobutylene
4. -- Acrylonitrile -- Polyacrylonitrile
5. -- Caprolactum -- Nylon 6
6. -- Hexamethylene diammonium adipate -- Nylon 6, 6
7. -- Butdiene + styrene -- Buna-S

Step 1. Polyethylene (from ethylene), polyvinyl chloride (from vinyl chloride), polyisobutylene (from isobutylene), polyacrylonitrile (from acrylonitrile), and Nylon 6 (from caprolactam) are each formed from just one monomer, so all five are homopolymers.

Step 2. Nylon 6,6 starts from two different small molecules -- hexamethylenediamine and adipic acid -- but these first combine into a single salt, hexamethylene diammonium adipate, which is the true repeating monomer unit that then undergoes condensation; since there is really only one kind of repeating unit in the finished chain, Nylon 6,6 is also classed as a homopolymer. …

Check how many chemically distinct monomers each polymer is genuinely built from -- one (even if it first forms an intermediate salt) means homopolym …

• Classifying Nylon 6,6 as a copolymer just because two starting reagents are mixed, without noticing they fi …