Nylon $6,6$ is not a

In which classes are polymers classified on the basis of molecular forces?

Which of the following is an addition polymer?

Which of the following is a thermosetting polymer?

$A$ polymer contains $50$ molecules with molecular mass $5,000$, $100$ molecules with molecular mass $10,000$ and $50$ molecules with molecular mass $15,000$. Calculate the number average molecular mass. (in $,000$)

Is $-(NH-CHR-CO)_n-$ a homopolymer or a copolymer?