$(CH_3)_3CBr + KOH (aq.) \to (CH_3)_3COH + KBr$. The above reaction is:

Heating methyl chloride with zinc in a closed tube produces...............

The correct order of the rate of reaction of the following reactants with a nucleophile by $S_{N}1$ mechanism is:
(Given: Structure $I$ and $II$ are rigid)

The correct order of rates of $C-Br$ bond ionisation of the following bromides is

Which one of the following halogen compounds is not useful as a substrate in an $S_N2$ reaction?

In nucleophilic aliphatic substitution,the nucleophiles are generally