Which one of the following halogen compounds is difficult to be hydrolysed by `S_(N^(1))` mechanism?

Which on of the following compounds will undergo faster hydrolysis reaction by S_(N)1 mechanism ? Justify your answer.

Which of the following compound is not hydrolysed?

Which one of the following compounds most readily undergoes substitution by S_(N^(2)) mechanism?

Which one of the following compounds most readily undergoes substitution by S_(N^(2)) mechanism?

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

Which of the following compounds can be hydrolysed?

Which of the following compounds can be hydrolysed?

Which one of the following compounds most radily undergoes substitution by S_(N^(2)) mechanism?