MCQ
Above conversion can be achieved by


- A$Zn(Hg), HCl$
- ✓$NH_2 - NH_2 /KOH/ \Delta$
- C$LiAlH_4$
- D$H_2/Ni$

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$(A)$ Reduction of $HCHO$
$(B)$ Oxidation of $HCHO$
$(C)$ Reduction of $PhCHO$
$(D)$ Oxidation of $Ph-CHO$
