The polymer,which can be stretched and retains its original status on releasing the force is ....

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

The $trans$-form of polyisoprene is:

Which of the following is not a biodegradable polymer?

$A$ natural linear polymer of $2-$methyl$-1,3-$butadiene becomes hard on treatment with sulphur between $373 \ K$ to $415 \ K$ and $-S-S-$ bonds are formed between chains. Write the structure of the product of this treatment.

Identify the addition polymer from the following: