MCQ
Racemic mixture is obtained due to halogenation of :
- A$n-$ pentane
- BIsopentane
- Cneopentane
- ✓Both $A\,\& \,B$
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$S{e_2}C{l_2}\xrightarrow{\Delta }SeC{l_4} + Se$

$Pt ( s )\left| H _2( s )( latm )\right| H ^{+}\left( aq ,\left[ H ^{+}\right]=1\right)|| Fe ^{3+}( aq ), Fe ^{2+}( aq ) \mid \operatorname{Pt}( s )$
Given : $E _{ Fe ^{3+} / e ^{2 *}}^0=0.771\,V$ and $E _{ H ^{+}+\frac{1}{2} H _2}^0=0 V , T =298\,K$
If the potential of the cell is $0.712\,V$ the ratio of concentration of $Fe ^{2+}$ to $Fe ^{2+}$ is $........$.(Nearest integer)
