Which of the following is formed from a single kind of monomer, i.e. is a homopolymer?

ABuna-N
BNylon 6
CNylon 6,6
DBakelite

Answer: B

Nylon 6 is formed from caprolactam alone. Buna-N (acrylonitrile and buta-1,3-diene), nylon 6,6 (two monomers) and bakelite (phenol and methanal) all involve two kinds of monomer.

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