The following is true for cotton, wool and silk.        They are examples of monomers that for polymers
       They are examples of synthetic polymers
       They are examples of naturally occuring polymers
       None of the above are true


2. Low-density polyethylene is composed of        primarily linear, unbranched chains of polyethylene in a close packing arrangement.
       primarily highly branched, nonlinear chains of polyethylene in a diffuse packing arrangement.
       a mixture of polyethylene and polystyrene.
       a mixture of polyethylene and polyester.
       polyethylene with high density plasticizers added to increase density.


3. The pendant group in polypropylene is a(n)        benzene ring.
       chlorine atom.
       bromine atom.
       ethyl group.
       methyl group.

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