Among the following,the biodegradable polymer is $.....$

Which of the following is not a polyester polymer?

Natural rubber has

$A$ polymer with high chemical stability has a melting point $(M.P.)$ of $327\ ^\circ C$ and the density of a completely crystalline sample is $2.3\ g/cm^3$. It is:

Which of the following is resistant to boiling aqua-regia?

Which of the following polymers is used in the manufacture of wood laminates?