1.

The complex compound that gives a preciptate with BaCl_2 solution is

Answer»

`[CO(NH_3)_5SO_4]BR`
`[Co(NH_3)_5Br]SO_4`
`[Co(NH_3)_5Br](NO_3)_2`
`[Co(NH_3)_5SO_4]Cl`

Answer :B


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