n-propyl chloride $\underset{\text{ dryether }}{\stackrel{\mathrm{Na}}{⟶}}\mathrm{A}\underset{773\mathrm{K},10-20\text{ atm }}{\stackrel{{\mathrm{Cr}}_2{\mathrm{O}}_3}{⟶}}\mathrm{B}\stackrel{{\mathrm{Cl}}_2/\mathrm{hv}}{⟶}\mathrm{C}\text{. }$Incorrect is

n-propyl chloride on wurtz reaction gives n-hexane, which on aromatisation gives benzene, which on addition with chlorine in presence of light forms benzene hexachloride.