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Under hydrolysis conditions, the compoun...

Under hydrolysis conditions, the compounds used for preparation of linear polymer and for chain termination, respectively are

A

`CH_(3) SiCI_(3)` and `Si(CH_(3))_(4)`

B

`(CH_(3))_(2) SiCI_(2)` and `(CH_(3))_(3) SiCI`

C

`(CH_(3))_(2) SiCI_(2)` and `CH_(3)SiCI_(3)`

D

`SiCI_(4)` and `(CH_(3))_(3) SiCI`

Text Solution

Verified by Experts

The correct Answer is:
B
Hydrolysis of dichlorodimethylsilane followed by polymerization yield straight chain or linear polymers

The chain length of polymer can be controlled by adding `(CH_(3)_(3) SiCI` which blocks the ends as shown:
`nHO - underset(CH_(3))underset(|)overset(CH_(3))overset(|)(Si)-OH + CI - underset(CH_(3))underset(|)overset(CH_(3))overset(|)(si) - CH_(3)`
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