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Silicones are sunthetic polyners conitai...

Silicones are sunthetic polyners conitainging repeated `R_2 SiO` units . Since the empirical formula is that of a ketone `(R_2 CO)`, the name Silicone has eeen given to these materils . Siliconse can be makde intio oils , rubbery eleastomers and resins . They find a varely of appoications because of their chemical inctness , water repelling nature m heat resistance and good electical insulationg property .
Commerical silicon polumers are usuallly metghly synthesised by the hudroluysis of
` R_2 SiCl_2 [R = Methyl (Me ) or phenyl ( phi)]`
.
If we mix `SiMe_3Cl` with `SiMe_2Cl_2` , we get silicones of the type .

A

B

C

both of the above

D

none fo the above

Text Solution

Verified by Experts

The correct Answer is:
A

`Si Me_3Cl overset (H_2O) Si Me_3OH`
` Si Me_2Cl_2 overset (H_2O)/(rarr) Si Me_2 (OH)_2`
` (##KSV_INORG_CHM_P1_C07_E01_078_S01.png" width="80%">
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Silicones are sunthetic polyners conitainging repeated R_2 SiO units . Since the empirical formula is that of a ketone (R_2 CO) , the name Silicone has eeen given to these materils . Siliconse can be makde intio oils , rubbery eleastomers and resins . They find a varely of appoications because of their chemical inctness , water repelling nature m heat resistance and good electical insulationg property . Commerical silicon polumers are usuallly metghly synthesised by the hudroluysis of R_2 SiCl_2 [R = Methyl (Me ) or phenyl ( phi)] . If we strt with SiMeCl_3 as the starting material silicones formed is :

Silicon is a

Silicone resins are made by:

Silicones have the general formula

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