1.

The repeating unit in silicone is ……………..

Answer»

`SiO_(2)`
`-underset(R)underset(|)OVERSET(R)overset(+)(SI)-O-`
`R-O-underset(R)underset(|)overset(|)(Si)-O`
`-underset(R)underset(|)overset(|)(Si)-O-O-R`

Answer :B


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