MCQ
Best reagent to carry out following conversion is


- ARed $P / I_2$
- B$LiAlH_4$ , $Et_2O$
- C$Zn-Hg / HCl$
- ✓$(i)$ $N_2H_4$ ; $(ii)$ $\mathop O\limits^\Theta H ,\Delta $

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$CaS{O_4}.5{H_2}{O_{(s)}}\, \rightleftharpoons \,CaS{O_4}.3{H_2}{O_{(s)}} + 2{H_2}{O_{(g)}}$ is equal to
$Fe|FeSO_4$ $E^o_{OP} = 0.44\, V$ $(a = 0.1\, M)$
