Write the equations of chemical reactions ethylene glycol -1.2 dibromoethane-ethyne-benzene-nitrobenzene

Let’s write down the equations for organic substances:
CH2Br – CH2Br + 2KOH = H2C = CH2 + 2KBr – exchange reaction, ethylene was obtained;
H2C = CH2 = H2 + C2H2 – dehydrogenation of ethylene, acetylene is released;
3C2H2 = C6H6 – trimerization occurs when heated, benzene is released;
C6H6 + HO – NO2 = C6H5NO2 + H2O – nitration occurs in the presence of sulfuric acid, when heated, nitrobenzene is formed;
These reactions show the connection of alkanes, alkenes, alkynes with aromatic hydrocarbons. The reaction products are used, for example, benzene, used as an additive in motor fuel. Nitrobenzene is used as an oxidizing agent.