The reaction of $1$-chlorobutane with alcoholic $KOH$ yields .....

What type of reaction is the following: $CH_3CH_2Cl + KOH(aq.) \rightarrow CH_3CH_2OH + KCl$?

What are $X$ and $Y$ respectively in the following reactions?

The compound which undergoes $S_{N^1}$ reaction most rapidly is

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 $:$

What is formed when toluene reacts with chlorine in the presence of light?