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When H ₂ ~S gas is passed through the HCl containing aqueous solution of CuCl ₂, HgCl ₂ , BiCl ₃ and CoCl ₂ it does not precipitate out

Options

  1. ACuS
  2. BHgS
  3. CBi ₂ ~S ₃
  4. DCoS

Correct answer

D. CoS

Step-by-step solution

CoS is not precipitated in acidic medium.

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