Homopolymers and Copolymers

Q. What are polyamides and peptide links?

Q. What is a homopolymer?

1. A polymer with uniform density throughout.
2. A polymer with extra monomer unit other than the base unit.
3. A polymer made out of one kind of monomer units.
4. A polymer which is isotropic, i.e has same properties in all directions.

Q. is a homopolymer while is a copolymer.

1. Polyethene
2. buna-S
3. Polyester
4. polyamide

Q.

Which is the monomer of neoprene among the following?

1. 

2. 

3. 

4.