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JEE Main levelSingle correct optionDifficulty 2 of 3pb151

Hydrolysis and condensation of which compound gives long linear silicone chains?

A $CH X_{3} SiCl X_{3}$
B $(CH X_{3}) X_{3} SiCl$
C $(CH X_{3}) X_{2} SiCl X_{2}$
D $SiCl X_{4}$

Answer: C

R X_{2} SiCl X_{2}

gives

R X_{2} Si (OH) X_{2}

, which condenses in two directions to form chains.

RSiCl X_{3}

gives cross-linked polymer,

R X_{3} SiCl

only caps (chain-stopper) and

SiCl X_{4}

gives silica.

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