What catalyst is employed when benzene is prepared from acetylene at 70°C?
A. Cr2O3 + A2O3 + SiO2
B. Raney nickel
C. Organo-nickel
D. Ni 250 – 300°C
A. Cr2O3 + A2O3 + SiO2
B. Raney nickel
C. Organo-nickel
D. Ni 250 – 300°C