Reaction of phenol with which of the following reagents forms picric acid?
- AConc. $H_2SO_4$
- Bdil. $H_2SO_4$
- CConc. $HNO_3$
- Ddil. $HNO_3$
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When benzene sulfonic acid and $p$-nitrophenol are treated with $NaHCO_3$,the gases released respectively are
Which among the following has the highest melting point?
Identify the product $(X)$ formed in the following reaction:
$C_{6}H_{5}OH + CH_{3}COOH \xrightarrow{H^{+}} X$
$C_{6}H_{5}OH + CH_{3}COOH \xrightarrow{H^{+}} X$
Which of the following is most acidic?
Medium
View SolutionExplain how the $-OH$ group attached to a carbon of a benzene ring activates it towards electrophilic substitution.
Difficult
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