MCQ
Oxidation number of nickel in $Ni{(CO)_4}$
- ✓$0$
- B$+4$
- C$-4$
- D$+2$
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$Zn | ZnSO_4 \,(0.01\, M) | | CuSO_4\,(1.0\, M) | Cu$
When the concentration of $ZnSO_4$ is $1.0\,M$ and that of $CuSO_4$ is $0.01\,M$, the $emf$ changed to $E_2$ What is the relation between $E_1$ and $E_2$?