What catalyst is employed when benzene is prepared from acetylene at 7

1.	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
Answer» D. Ni 250 – 300°C

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