(A) $(i)$ $2-Chloro-3-methylbutane$ (Secondary alkyl halide)
$(ii)$ $3-Chloro-4-methylhexane$ (Secondary alkyl halide)
$(iii)$ $1-Iodo-2,2-dimethylbutane$ (Primary alkyl halide)
$(iv)$ $1-Bromo-3,3-dimethyl-1-phenylbutane$ (Secondary benzyl halide)
$(v)$ $2-Bromo-3-methylbutane$ (Secondary alkyl halide)
$(vi)$ $1-Bromo-2-ethyl-2-methylbutane$ (Primary alkyl halide)
$(vii)$ $3-Chloro-3-methylpentane$ (Tertiary alkyl halide)
$(viii)$ $3-Chloro-5-methylhex-2-ene$ (Vinyl halide)
$(ix)$ $4-Bromo-4-methylpent-2-ene$ (Allyl halide)
$(x)$ $1-Chloro-4-(2-methylpropyl)benzene$ (Aryl halide)
$(xi)$ $1-(Chloromethyl)-3-(2,2-dimethylpropyl)benzene$ (Primary benzyl halide)
$(xii)$ $1-Bromo-2-(1-methylpropyl)benzene$ (Aryl halide)