C6h14-c6h12-c6h6-c6h5cl-c6h5oh
1)C6H14=C6H12+H2 2)C6H12 =C6H6 + 3H2 3)C6H6 + Cl2 = C6H5Cl + HCl 4)C6H5Cl + NaOH = C6H5OH + NaCl