Correct statements among (i) to (iv) regardin | vedclass

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(D) Silicones are organosilicon polymers with the general formula $(R_2SiO)_n$. $(i)$ They possess organic groups (alkyl/aryl) which make them hydroph

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$(i), (ii)$ and $(iv)$

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(D) Silicones are organosilicon polymers with the general formula $(R_2SiO)_n$. $(i)$ They possess organic groups (alkyl/aryl) which make them hydrophobic. This is correct. $(ii)$ Silicones are biocompatible and are used in medical implants. This is correct. $(iii)$ Silicones have high thermal stability and high dielectric strength,not low. This is incorrect. $(iv)$ They are resistant to oxidation and are used as greases and lubricants. This is correct. Therefore,statements $(i), (ii),$ and $(iv)$ are correct.

List-$I$ (Si-Compounds)	List-$II$ (Si-Polymeric/other products)
$A$. $(CH_3)_4 Si$	$I$. Chain silicone
$B$. $(CH_3) Si(OH)_3$	$II$. Dimeric silicone
$C$. $(CH_3)_2 Si(OH)_2$	$III$. Silane
$D$. $(CH_3)_3 Si(OH)$	$IV$. $2D$-Silicone

Correct statements among $(i)$ to $(iv)$ regarding silicones are:
$(i)$ they are polymers with hydrophobic character
$(ii)$ they are biocompatible
$(iii)$ in general,they have high thermal stability and low dielectric strength
$(iv)$ usually they are resistant to oxidation and used as greases.

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Correct statements among $(i)$ to $(iv)$ regarding silicones are:$(i)$ they are polymers with hydrophobic character$(ii)$ they are biocompatible$(iii)$ in general,they have high thermal stability and low dielectric strength$(iv)$ usually they are resistant to oxidation and used as greases.