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A metal gives two chlorides 'A' and 'B'....

A metal gives two chlorides 'A' and 'B'.'A' gives black precipitate with `NH_(4)OH` and 'B' gives white ppt. With KI 'B' gives a red precipitate soluble in excess of KI.'A' and 'B' are respectively `:`

A

`Hg_2Cl_2` and `HgCl_2`

B

`HgCl_2` and `ZnCl_2`

C

`ZnCl_2` and `Hg_2Cl_2`

D

None of these

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