`C Cl_4` does not undergo hydrolysis but `SiCl_4` undergoes hydrolysis. Why?

Give reasons for the following: C Cl_4 cannot be hydrolyzed but SiCl_4 can hydrolysed.

The compound that does not undergo hydrolysis by S_(N)1 mechanism is

Carbon has many allotropes. C Cl_4 does not undergo hydrolysis. Glve a reason.

Carbon and silicon belong to the same group and have many similarities. C Cl_4 cannot be hydrolysed but SiCl_4 can be. Why?

S_N^1 reaction takes placed in two steps. The relative reactivity of an alkyl halide in S_N^1 reaction depends on the relative stability of carbocations formed by ionisation. What will happen to the optical activity of a dextro rotatory isomer of alkyl halide if it undergoes hydrolysis by S_N^1 mechanism ?