How is acetylene gas prepared in laboratory?

How is methane gas prepared in laboratory ?

How is ammonia gas prepared in laboratory, starting from NH_4Cl ?

How is benzene prepared in the laboratory? Write a note on its electrophilic substitution reactions.

How is pure acetone prepared in the laboratory?

How is benzene prepared in the laboratory and on commercial scale ? How does it react with ozone

How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.

How is benzene prepared in the laboratory and on commercial scale ? How does it react with conc. HNO_3 in the presence of conc. H_2SO_4

How is benzene prepared in the laboratory and on commercial scale ? How does it react with C_2H_5Cl in the presence of AlCl_3 ?

How is dihydrogen prepared in laboratory ?

How is nitric acid prepared in laboratory?