Question

Vicinal and geminal dihalides can be distinguished by

• A. $KOH \left(a\right)$
• B. KOH (alc.)
• C. Zn dust
• D. none of these

Answer 1

Answer: (A)

$KOH \left(a\right)$

Answer 2

\underset{\text{Vic-dihalide}}{ {CH_{2}ClCH_{2}Cl}} ${ ->[KOH(a)] }$ \underset{\text{ethane-1-2-diol}}{ {CH_{2}OHCH_{2}OH}} \underset{\text{Gem-dihalide}}{ {CH_{3}CHCl_{2}}} ${ ->[KOH(a)] }$ \underset{\text{ethanal}}{ {CH_{3}CHO}}