Which of the following statements are correct | vedclass

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(A) . Natural rubber becomes soft and sticky at high temperature,not hard. So,statement $a$ is incorrect.$b$. Neoprene is formed by the polymerization

Vedclass · Accepted Answer

$b, c$

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(A) . Natural rubber becomes soft and sticky at high temperature,not hard. So,statement $a$ is incorrect.$b$. Neoprene is formed by the polymerization of chloroprene ($2-$chloro$-1,3-$butadiene). So,statement $b$ is correct.$c$. Nylon $6,6$ is formed by the condensation polymerization of hexamethylenediamine and adipic acid,which contains amide linkages. So,statement $c$ is correct.$d$. Buna$-S$ is a copolymer formed from $1,3-$butadiene and styrene. So,statement $d$ is incorrect.Therefore,statements $b$ and $c$ are correct.

$List-I$ (Polymer)	$List-II$ (Monomer)
$(A)$ Neoprene	$(I)$ Acrylonitrile
$(B)$ Teflon	$(II)$ Chloroprene
$(C)$ Acrilan	$(III)$ Tetrafluoroethene
$(D)$ Natural rubber	$(IV)$ Isoprene

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.

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Match $List-I$ with $List-II$.

$List-I$ (Polymer) $List-II$ (Monomer)

$(A)$ Neoprene $(I)$ Acrylonitrile

$(B)$ Teflon $(II)$ Chloroprene

$(C)$ Acrilan $(III)$ Tetrafluoroethene

$(D)$ Natural rubber $(IV)$ Isoprene

Choose the correct answer from the options given below.

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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.