What is tetra chloro silico methane? How it can be prepared from Silica?

Explanation

Tetrachloro silico methane iss silicon tetrachloride of formula SiCl_4.
`SiCl_4 `can be prepared from silica by passing dry chlorine over a red-hot mixture of ilica and charcoal.
`SiO_2+2C+2Cl_2=SiCl_4+2CO`