An alcoholic solution of $KOH$ is a specific reagent for which of the following reactions?

On what factors does the rate (reactivity) of the $S_{N}1$ reaction depend? Explain with suitable examples.

From the given pairs of compounds,in which will the first compound undergo $S_N2$ reaction faster?

Identify the incorrect statement regarding the given structures $A$ and $B$.

Arrange the following compounds in order of decreasing rate of hydrolysis for $SN_1$ reaction:
$(I)$ $C_6H_5CH_2Br$
$(II)$ $p-CH_3-C_6H_4-CH_2Br$
$(III)$ $p-(CH_3)_2CH-C_6H_4-CH_2Br$
$(IV)$ $p-CH_3CH_2-C_6H_4-CH_2Br$

Gem dihalide on hydrolysis gives: