Which alkyl chloride shows highest probability of SN1 mechanism?

Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.

Which of the following alkyl halides is hydrolysed by S_N^1 mechanism ?

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 ?

Which of the following alkyl halides is hydrolysed by SN^2 mechanism ?

Benzyl chloride is highly reactive towards the SN1 reaction