Which of the following reactions is most likely to proceed via a $S_N2$ mechanism?

Which of the following statements is incorrect?

Identify the major product X formed in the following reaction sequence:

$CH_3CH_2CH_2Br \xrightarrow{KCN} A \xrightarrow[Partial Hydrolysis]{H_3O^+} B \xrightarrow{Br_2, NaOH} X$

Read the following statements

A. Gabriel phthalimide synthesis is used to prepare all ${1^0}$ amines

B. ${C_6}{H_5}Cl{C_6}{H_5} - {C_6}{H_5}$ is known as Wurtz reaction.

C. In $S{N^1}$ mechanism there is more inversion than retention leading to partial racemization

D. All aldehydes give red precipitate with Fehling’s solution

E. Reactivity order of alkyl halides towards $S{N^2}$ reaction is ${1^0} > {2^0} > {3^0}$

Number of correct statements among these

$C{H_3} - CH - C{H_2} - C{H_3}\xrightarrow[{UV}]{{C{l_2}}}A\,\left( {{\rm{major}}} \right),\,A$ is

The ${S_N}1$ reactivity of following halides will be in the order

(i) ${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_3}{\rm{CBr}}$ (ii)${\left( {{{\rm{C}}_6}{{\rm{H}}_5}} \right)_2}{\rm{CHBr\;}}$

(iii) ${\left( {{{\rm{C}}_6}{{\rm{H}}_5}} \right)_2}{\rm{C}}\left( {{\rm{C}}{{\rm{H}}_3}} \right){\rm{Br}}$ (iv) ${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_2}{\rm{CHBr}}$

(v) ${\rm{\;}}{{\rm{C}}_2}{{\rm{H}}_5}{\rm{Br}}$

${{\rm{S}}_{\rm{N}}}1$ mechanism for the reaction,$R - X + {\rm{KOH}}\; o R{\rm{OH}} + {\rm{K}}X$ follow :

Which of the following is the general formula for alkyl halides?

What is the product of the reaction of ethyl bromide with sodium iodide in dry acetone?

What is the role of anhydrous $ZnCl_2$ in the reaction of primary alcohols with $HCl$ to form alkyl halides?

In the S_N2 reaction $CH_3I + NaN_3 o CH_3N_3 + NaI$, which solvent will favor the reaction?