The following reaction is described as:
$CH_3(CH_2)_5-CH(CH_3)-Br + OH^- \rightarrow HO-CH(CH_3)(CH_2)_5CH_3 + Br^-$

Which of the following compounds is most reactive towards $S_N1$ reaction?

The $C-X$ bond is strongest among the following:

Which among the following statements is $NOT$ correct about $SN^2$ reaction mechanism?

$A$ compound $(a)$,$C_8H_9Br$,gives a white precipitate when heated with alcoholic $AgNO_3$. Oxidation of $(a)$ gives an acid $(b)$. The acid $(b)$,$C_8H_6O_4$,easily forms an anhydride on heating. Identify the compound $(a)$.

Explain the mechanism of the bimolecular nucleophilic substitution $(S_N2)$ reaction with the example of $CH_3Cl$.