Which one of the following is used to make 'non-stick' cookware?

Which of the following is a biodegradable polymer?

Which of the following is not true?

Which of the following statements is incorrect?

Match the polymers in List-$I$ with their monomers in List-$II$ and select the correct match:

List-$I$	List-$II$
$A$. $Nylon$ $6,6$	$i$. $Ethylene$ $glycol$ and $Terephthalic$ $acid$
$B$. $Terylene$	$ii$. $1,3-Butadiene$ and $Styrene$
$C$. $Buna-S$	$iii$. $Chloroprene$
$D$. $Neoprene$	$iv$. $Acrylonitrile$
	$v$. $Adipic$ $acid$ and $Hexamethylenediamine$

The correct match is:

Which of the following statements are correct?
$a$. Natural rubber becomes soft and sticky at high temperature.
$b$. Neoprene is a polymer of $2-$chloro$-1,3-$butadiene.
$c$. Nylon $6,6$ is a polyamide fibre.
$d$. Buna$-S$ is an example of a homopolymer.