Suggest a route for the preparation of nitrobenzene starting from acetylene ?

Lithium hydride can be used to prepare other useful hydrides. Beryllium hydride is one of them. Suggest a route for the preparation of beryllium hydride starting from lithium hydride. Write chemical equations involved in the process.

Lithium hydride can be used to prepare other useful hydrides. Beryllium hydride is one of them. Suggest a route for the preparation of beryllium hydride starting from lithium hydride. Write chemical equations involved in the process.

Suggest the route for the preparation of the following from benzene . 1) 3- chloro nitrobenzene 2) 4- chlorotoluene 3) Bromo benzene 4) m- dinitro benzene