What happens when
(i) n-butyl
chloride is treated with alcoholic KOH,
(ii)
bromobenzene is treated with Mg in the presence of dry ether,
(iii)
chlorobenzene is subjected to hydrolysis,
(iv) ethyl
chloride is treated with aqueous KOH,
(v) methyl
bromide is treated with sodium in the presence of dry ether,
(vi) methyl
chloride is treated with KCN.