The straight chain polymer is formed by

Options

Ahydrolysis of $\left(\mathrm{CH}_3\right)_3 \mathrm{SiCl}$ followed by condensation polymerisation
Bhydrolysis of $\mathrm{CH}_3 \mathrm{SiCl}_3$ followed by condensation polymerisation
Chydrolysis of $\left(\mathrm{CH}_3\right)_4 \mathrm{Si}$ by addition polymerisation
Dhydrolysis of $\left(\mathrm{CH}_3\right)_2 \mathrm{SiCl}_2$ followed by condensation polymerisation

Correct answer

D. hydrolysis of $\left(\mathrm{CH}_3\right)_2 \mathrm{SiCl}_2$ followed by condensation polymerisation

Step-by-step solution

\mathrm{RSiCl}_3

(trichloro derivatives) on hydrolysis followed by condensation polymerisation yields branched chain silicones. Straight chain silanes are silicone oils. These are more stable at high temperature than mineral oils and have less tendency to thicken at low temperature.

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