When benzyl chloride is treated with ethanolic $KCN$,the major product formed is

The rate of $S_{N}2$ reaction is:

The following is a substitution reaction in which $-CN$ replaces $-Cl$:
$R-Cl \xrightarrow[\text{alcoholic}]{KCN, \Delta} R-CN + KCl$
To obtain propanenitrile,$R-Cl$ should be:

Predict the correct reactivity order of the following compounds towards $S_N1$ reaction:

Which of the following,upon treatment with $tert-BuONa$ followed by addition of bromine water,fails to decolourize the colour of bromine?

Among the following chlorides,the compounds which will be hydrolysed most easily and most slowly in aqueous $NaOH$ solution are respectively:
$1$. Methoxymethyl chloride $(CH_3OCH_2Cl)$
$2$. Benzyl chloride $(C_6H_5CH_2Cl)$
$3$. Neopentyl chloride $((CH_3)_3CCH_2Cl)$
$4$. Propyl chloride $(CH_3CH_2CH_2Cl)$