Q. The straight chain polymer is formed by:

A) hydrolysis of CH₃SiCl₃ followed by condensation polymerisation
B) hydrolysis of (CH₃)₄Si by addition polymerisation
C) hydrolysis of (CH₃)₂SiCl₂ followed by condensation polymerisation
D) hydrolysis of (CH₃)₃SiCl followed by condensation polymerisation
Explanation

[Solution from source] (CH₃)₂SiCl₂ hydrolyses to (CH₃)₂Si(OH)₂, which has two –OH groups and condenses into long straight-chain silicones. CH₃SiCl₃ gives three –OH groups and a cross-linked polymer, while (CH₃)₃SiCl has only one and just caps chains. Answer (3).

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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