Question

The alcohol having molecular formula $C_4H_9OH$, when shaken with a mixture of anhydrous $ZnCl_2$ and conc. $HCl$ gives an oily layer product after five minutes. The alcohol is

• A. $H_3C — (CH_2)_3 — OH$
• B. $(CH_3)_2CH — CH_2OH$
• C. $(CH_3)_3C — OH$
• D. $H_3C — CH(OH) CH_2 — CH_3$

Answer 1

Answer: (D)

Secondary alcohol, on reaction with anhydrous $ZnCl _{2}$ and conc. $HCl$ (Lucas reagent) gives an oily layer product after five minuts.
$H_{3}C -\underset{\overset{|}{OH}}{CH} - CH_{2}CH_{3} \ce{->[{\text{Lucas reagent}}]}$ oily layer
product (turbidity) after 5 min.