$C_6H_{13}Br + OH^{-} \to C_6H_{13}OH + Br^{-}$ is an example of

Given below are two statements $:$
Statement $(I) :$ Alcohols are formed when alkyl chlorides are treated with aqueous potassium hydroxide by elimination reaction.
Statement $(II) :$ In alcoholic potassium hydroxide,alkyl chlorides form alkenes by abstracting the hydrogen from the $\beta-$carbon.
In the light of the above statements,choose the most appropriate answer from the options given below $:$

The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is:

The organic chloro compound,which shows complete stereochemical inversion during an $S_{N}2$ reaction,is

Which of the following can be used as the halide component for Friedel-Crafts reaction?

In the reaction $2CHCl_3 + O_2 \xrightarrow{X} 2COCl_2 + 2HCl$,$X$ represents: