$SiC{l}_4$ is easily hydrolysed but $CC{l}_4$ is not. This is because

Silicon is the second member of group-14 and has vacant 3d orbitals. Therefore, silicon can extend its valency beyond four. Carbon is the first member of group-14 and is tetravalent, which means that it can form only four bonds. It cannot extend its valency because it has no vacant d orbitals. This is the reason that SiCl₄ can undergo hydrolysis but CCl₄ cannot undergo hydrolysis.