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 prepared by heating tetrafluoroethene in presence of a persulphate catalyst at high pressure.

Solution

$\left(\mathrm{A}\right)$ Natural rubber is poly isoprene containing Cis alkene units.
$\left(\mathrm{B}\right)$ Nylon- $6$ has amide linkage, i.e., .
$\left(\mathrm{C}\right)$ Cellulose is a straight chain polysaccharide composed of $\beta \to D$ Glucose units held together by $C_1-C_4$ glycosidic linkage
$\left(\mathrm{D}\right)$

Asked in: JEE Advanced 2019 (Paper 2)

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