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Question
Silicon has a strong tendency to form polymers like silicones. The chain length of silicone polymer can be controlled by adding ______.
Options
MeSiCl3
Me2SiCl2
Me3SiCl
Me4Si
Solution
Silicon has a strong tendency to form polymers like silicones. The chain length of silicone polymer can be controlled by adding Me3SiCl.
Explanation:
The chain length of the polymer can be controlled by adding (CH3)3SiCl which blocks the ends.
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RELATED QUESTIONS
Me3SiCl is used during polymerisation of organo silicones because:
(i) the chain length of organo silicone polymers can be controlled by adding Me3SiCl.
(ii) Me3SiCl blocks the end terminal of silicone polymer.
(iii) Me3SiCl improves the quality and yield of the polymer.
(iv) Me3SiCl acts as a catalyst during polymerisation.
Assertion (A): Silicons are water repelling in nature.
Reason (R): Silicons are organosilicon polymers, which have (–R2SiO–) as repeating unit.
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