Nylon-$6,6$ is a condensation polymer of two monomers $X$ and $Y$. The number of $-CH_2-$ groups in $X$ and $Y$ are respectively

Toluene diisocyanate $(TDI)$ is used in the synthesis of which polymer?

Which of the following household plastic materials is used to prepare drinking straws?

Which factor imparts crystalline nature to a polymer like nylon?

Write down the name of monomers,structure of polymer and uses for the following polymers.

$A$ polymer sample contains $10$ molecules each with molecular mass $5,000$ and $5$ molecules each with molecular mass $50,000$. The number average molecular mass of the polymer sample is