Question

Which of the following reagents converts both acetaldehyde and acetone to alkanes?

• A. $Ni/H_{2}$
• B. $LiAlH_{4}$
• C. $I_{2}/NaOH$
• D. $Zn-Hg/conc.\,HCl$

Answer 1

Answer: (D)

$Zn-Hg/conc.\,HCl$

Answer 2

Clemmensen's reduction (conc. $HCl / Zn - Hg$ ) or Wolf-Kishner reduction $\left( C _{2} H _{5} ONa / NH _{2} NH _{2}\right)$ can be used to convert $> C = O$ group into $> CH _{2}$ group.