MCQ
Copper $(II)$ ions gives reddish brown precipitate with potassium ferrocyanide. The formula of the precipitate is
- A$Cu_4[Fe(CN)_6]$
- ✓$Cu_2[Fe(CN)_6]$
- C$Cu_3[Fe(CN)_6]$
- D$Cu_3[Fe(CN)_6]_2$
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$H _2 O (\ell) \rightarrow H _2 O ( g )$
at $T =100^{\circ} C$ and $1$ atmosphere pressure, the correct choice is :