Aliphatic amines are……basic than ${\rm{N}}{{\rm{H}}_3}$ but aromatic amines are ……basic than ${\rm{N}}{{\rm{H}}_3}$.

JEE CHEMISTRY MCQ: AMINES

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Aliphatic amines are……basic than

\mathrm{N}{\mathrm{H}_3}

but aromatic amines are ……basic than

\mathrm{N}{\mathrm{H}_3}

View answer and explanation

Correct option: A

More, less

Option A (More, less) is correct because aliphatic amines are more basic than ammonia due to the +I effect of alkyl groups, while aromatic amines are less basic than ammonia due to resonance delocalization of the lone pair on nitrogen into the benzene ring.

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{{\text{C}}_6}{{\text{H}}_5}{\text{N}}{{\text{H}}_2}\xrightarrow{{{\text{NaN}}{{\text{O}}_2} + {\text{HCl}}}}{\text{X}}\xrightarrow{{{\text{CuCN}}}}{\text{Y}}\xrightarrow{{{{\text{H}}^ + }/{{\text{H}}_2}{\text{O}}}}{\text{Z}}

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