Chlorination of toluene in the presence of light and heat followed by treatment with aqueous $NaOH$ gives:

The major product of the following reaction is:

The major product formed in the dehydrohalogenation reaction of $2-Bromopentane$ is $Pent-2-ene$. This product formation is based on?

The major product $P$ of the above reaction is:

$(i) \, (CH_3)_2CH-CH_2Br \xrightarrow{C_2H_5OH} (CH_3)_2CH-CH_2OC_2H_5 + HBr$
$(ii) \, (CH_3)_2CH-CH_2Br \xrightarrow{C_2H_5O^-} (CH_3)_2CH-CH_2OC_2H_5 + Br^-$
The reaction mechanisms for $(i)$ and $(ii)$ are respectively:

Consider the following reaction:
(Cyclohexyl)methyl chloride + $CH_3ONa$ $\rightarrow$ $1-$(methoxymethyl)cyclohex$-1-$ene.
The mechanism of the reaction will be: