Which of the following is used as a catalyst for preparing a Grignard reagent?

Identify the $Swartz$ reaction from the following.

Identify the product $Z$ in the following reaction sequence:
$Benzene + (CH_3CO)_2O$ $\xrightarrow{AlCl_3} X$ $\xrightarrow{Zn-Hg/HCl} Y$ $\xrightarrow{NBS} Z$

Identify the name of the reaction in which alkyl fluorides are prepared by heating alkyl bromide or alkyl chloride with metallic fluorides like $AgF$,$Hg_2F_2$,$CoF_2$,or $SbF_3$.

Which of the following compounds is obtained by using Swartz reaction?

Discuss the methods of preparing haloalkanes from alcohols.