MCQ
Which of the following double salt does not exist ?
- ✓$(NH_4)_2SO_4.CuSO_4 . 6H_2O$
- B$(NH4)_2SO_4. FeSO_4. 6H_2O$
- C$(NH_4) _2SO_4 . ZnSO_4. 6H_2O$
- D$(NH_4)_2SO_4. NiSO_4. 6H_2O$
The double salt $\left( NH _4\right)_2 SO _4 \cdot ZnSO _4 \cdot 6 H _2 O$ does not exist.
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