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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
Amongst the following alcohols which would react fastest with conc. $HCl$ and $ZnCl_2$ ?
  • A
    pentanol
  • B
    $2-$ methyl butanol
  • C
    $2-$ pentanol
  • ✓
    $2-$ methyl butan $-2-$ ol
✓

Answer

Correct option: D.
$2-$ methyl butan $-2-$ ol
d
$ZnCl_2 +$ cone . $HCl$ is Lucas reagent . Lucas reagent reacts fastest with tertiary alcohol. $3^o$ alcohol $+$ Lucas reagent $=$ Immediate turbidity

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