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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
answer is C.
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Detailed Solution
Methyl chloride reacts with silicon in presence of Copper as a catalyst at 300oc various types of Organo silanes like (CH3)2SiCl2 are formedwhich on hydrolysis followed by Polymerisation yields straight chain poymer known as straight chain silicones2CH3MgCl+SiCl4→CH32SiCl2+2MgCl2 OR 2CH3Cl+Si →Cu-powder catalyst;3000cCH32SiCl2Dichloro dimethyl silane