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Phenols: acidity, electrophilic substitution, Reimer-Tiemann

5 solved questions

Every question from past board papers on Phenols: acidity, electrophilic substitution, Reimer-Tiemann, newest paper first. Open any question for its full worked answer.

NEET UG 2022 question paper (official, booklet R6)

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  1. Given below are two statements :

    Statement I :

    The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group.

    Statement II :

    \(o\)-nitrophenol, \(m\)-nitrophenol and \(p\)-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring.

    In the light of the above statements, choose the most appropriate answer from the options given below :

    4 marks · See worked answer →

NEET UG 2019 question paper (official, booklet P1)

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  1. The structure of intermediate A in the following reaction, is :

    [Reaction: cumene (isopropylbenzene) \(\xrightarrow{O_2}\) A \(\xrightarrow[H_2O]{H^+}\) phenol + acetone]

    reaction scheme and four structure options

    4 marks · See worked answer →

NEET UG 2018 question paper (official, booklet EE)

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  1. In the reaction

    [phenol + CHCl\(_3\) + NaOH \(\rightarrow\) sodium salicylaldehyde (o-O\(^-\)Na\(^+\) C\(_6\)H\(_4\) CHO), shown as a structure]

    the electrophile involved is

    reaction of phenol with CHCl3 and NaOH giving sodium salicylaldehyde

    4 marks · See worked answer →

NEET UG 2017 question paper (official, booklet B)

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  1. Mixture of chloroxylenol and terpineol acts as :

    4 marks · See worked answer →

  2. Which one is the most acidic compound ?

    four phenol structure options

    4 marks · See worked answer →