MCQ
Compounds $ A$ is


- ✓

- B

- C

- D








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$2 Fe _{( s )}+ O _{2( g )}+4 H _{( aq )}^{+} \rightarrow 2 Fe _{( aq )}^{2^{+}}+2 H _2 O ( l ) \quad E ^{\circ}=1.67 V$, At $\left[ Fe ^{2+}\right]=10^{-3} M , P \left( O _2\right)=0.1$ atm and $pH =3$, the cell potential at $25^{\circ} C$ is
Reason : Zinc forms complex with $CuSO_4$
