What are silicones? How are they prepared? What are their uses?
Explain a) silicates b) zeolites.

 ilicones are polymers that include silicon together with carbon, hydrogen, oxygen, and sometimes other elements. Some common forms include silicone oil, silicone grease, silicone rubber, silicone resin. Silicones are inert, synthetic compounds with a variety of forms and uses. Typically heat-resistant and rubber-like, they are used in sealants, adhesives, lubricants, medical applications, cookware, and insulation. These are group of organosilicon polymers. The repeating units is  . These are prepared by polymerization of alkyl or aryl substituted silicon chlorides, R_nSiCl_{(4 − n),}