COMEDK 2023 Shift 1 Paper

The conversion of Propyne to Benzene can be brought out in 4 steps.
Choose the reagents to be used, in the proper sequential order, to bring out the conversion.
Reagents provided: alc. KOH,H2∕Pd,Na / dry ether, HBr,HBr∕(C6H5‌CO)2O2, Soda-lime, Cr2O3 (high T and P ), Conc. H2SO4