Which polymer is obtained from monomers $3-$Hydroxybutanoic acid and $3-$Hydroxypentanoic acid?

Synthetic fibres like nylon-$66$ are very strong because

Which of the following polymers is used to obtain plastic dinnerware?

The polydispersity index $(PDI)$ of a polymer is $1.25$. If $\overline{M}_{n}$ is $800$,what is its $\overline{M}_{w}$?

Buna-$N$ synthetic rubber is a copolymer of:

Choose the correct option$(s)$ from the following:
$(1)$ Natural rubber is polyisoprene containing trans alkene units.
$(2)$ Nylon-$6$ has amide linkages.
$(3)$ Cellulose has only $\alpha-D$-glucose units that are joined by glycosidic linkages.
$(4)$ Teflon is prepared by heating tetrafluoroethene in the presence of a persulphate catalyst at high pressure.