When `SiCI_(4)` vapours are passed over hot Mg, the products formed are

When `SiCI_(4)` vapours are passed over hot Mg, the products formed are
When `SiCI_(4)` vapours are passed over hot Mg, the products formed are
When `SiCI_(4)` vapours are passed over hot Mg, the products formed are
When `SiCI_(4)` vapours are passed over hot Mg, the products formed are

formed