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7. Alcohol, phenol and ethers — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry7. Alcohol, phenol and ethers1 Mark
MCQ
Optically active $ 2-$ octanol rapidly loses its optical activity when exposed to
  • ✓
    dilute acid
  • B
    dilute base
  • C
    light
  • D
    humidity
✓

Answer

Correct option: A.
dilute acid
a
dehydration of alcohol takes place in dil. acid and alkene is produced which shows  $G.I.$

$\underset{\begin{smallmatrix} 
 2\,-\,oc\tan ol \\ 
 (optically\,\,active) 
\end{smallmatrix}}{\mathop{\begin{matrix}
   C{{H}_{3}}-\overset{*}{\mathop{C}}\,H-{{(C{{H}_{2}})}_{5}}-C{{H}_{3}}  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   :\underset{\scriptscriptstyle\centerdot\centerdot}{O}H\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}}}\,$$\xrightarrow{{dil\,.\,acid}}\,C{H_3} - CH = CH - {(C{H_2})_4} - C{H_3}$

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