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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
Which of the following is most acidic
  • A
    Phenol
  • B
    Benzyl alcohol
  • ✓
    $m-$ chlorophenol
  • D
    Cyclohexanol
✓

Answer

Correct option: C.
$m-$ chlorophenol
c
(c) Benzyl alcohol and cyclohexanol are not acidic while phenol and $m-$ chlorophenol are acidic due to presence of electron withdrawing groups like

$ - N{O_2},\,\, - Cl,\,\, - CN$

increases the acidic character of phenols. Hence, $m-$chlorophenol is more acidic than phenol.

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