Which of the following compounds could be used as catalysts in halogenation of benzene?
I. AlCl3
II. NaCl
III. FeBr3
IV. MgCl2
V. PbCl2
A) I) and V)
B) II) and III)
C) II) and IV)
D) I) and III)
E) III) and V)
Correct Answer:
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