In the mixture of conc. $H_2SO_4$ and $HNO_3$,the nitrating species is:
- A$N_2O_4$
- B$NO_2^+$
- C$NO_2$
- D$NO_2^-$
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Which of the following species participates in the sulphonation of the benzene ring?
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View SolutionIn which of the following compounds does electrophilic aromatic substitution take place in the phenyl ring present on the left-hand side?
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View SolutionConsider the following reactions:
$C_2 H_2 \xrightarrow[500^{\circ}C]{\text{red hot iron tube}} A$
$A \xrightarrow[70^{\circ}C]{\text{conc. } HNO_3, \text{conc. } H_2 SO_4} B$
$B \xrightarrow{LiAlH_4} C_6 H_5-N=N-C_6 H_5$
$A$ and $B$ are:
$C_2 H_2 \xrightarrow[500^{\circ}C]{\text{red hot iron tube}} A$
$A \xrightarrow[70^{\circ}C]{\text{conc. } HNO_3, \text{conc. } H_2 SO_4} B$
$B \xrightarrow{LiAlH_4} C_6 H_5-N=N-C_6 H_5$
$A$ and $B$ are:
Which of the following is non-aromatic?
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View SolutionWhich of the following groups possess $m-$directional effect?
$-OH, -O^{-}, -CH_3, -Cl, -NO_2, -COOH, -NHCOCH_3, -SO_3H, -Br, -COCH_3$
$-OH, -O^{-}, -CH_3, -Cl, -NO_2, -COOH, -NHCOCH_3, -SO_3H, -Br, -COCH_3$
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