The acidic nature of phenol is due to which of the following?

  • A
    Resonance stabilization of the phenoxide ion
  • B
    Tautomerism in phenol
  • C
    Higher electronegativity of $O$ compared to $H$
  • D
    None of the above

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Which of the following compounds is the most acidic?

What is $Y$ in the given reaction sequence?

Some compounds and their $pK_a$ values are given. Arrange them in decreasing order of their acidic strength.
$(i)$ Ethanol $(15.9)$,Phenol $(10.0)$,Cresol $(10.1)$,Water $(15.7)$
$(ii)$ $o$-Nitrophenol $(7.2)$,$m$-Nitrophenol $(8.3)$,Ethanol $(15.9)$,Water $(15.7)$,Phenol $(10.0)$

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Phenol gives characteristic colouration with

The major aromatic product of the following reaction sequence is:

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