Question

How many of the following is/are the incorrect statement about silicones
1.They are made up of $S{i}_4^{4-}$ units
2.They are polymers made up of $R_{2}SiO$ units
3.They are water soluble compounds.
4.They are hydrophilic in nature

Answer 1

Synthetic organosilicon compounds having repeated $R_{2}SiO$ units held by $Si–O–Si$ linkages. These compounds have the general formula $(R_{2}SiO{)}_n$ where R = alkyl or aryl group.
Silicones being surrounded by non-polar alkyl groups are water repelling in nature thus hydrobhobic in nature. Hence 1,3and 4 are incorrect options