Describe the chemical reactions of haloalkanes.

Which of the following reactions is expected to take place by the $S_N2$ mechanism?

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

Which compound gives acetaldehyde upon reaction with aqueous $KOH$?

Given below are two statements:
Statement $I$: $(Et)_2N-CH_2CH_2Cl$ will undergo alkaline hydrolysis at a faster rate than $(Et)_2CH-CH_2CH_2Cl$.
Statement $II$: Intramolecular substitution takes place first by involving the lone pair of electrons on nitrogen.
In the light of the above statements,choose the most appropriate answer from the options given below:

Which of the following compounds is obtained when $Bromoethane$ is reacted with silver acetate?