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Q. Reaction of aniline with acetic anhydride in presence of pyridine yields acetic acid and product $'X'$ .
What is the total number of groups from the following, present in the compound $'X'$ ?
$-NO_{2}$ $-NH-CO-$ $-NH_{2}$
$-COOH$ $-CH_{3}$ $-N=N-$
$-CH_{2}CH_{3}$ $-C_{6}H_{5}$ $-OH$

NTA AbhyasNTA Abhyas 2022

Solution:

Acetylation of aniline with acetic anhydride in presence of pyridine yields acetanilide $\left(\right.X\left.\right)$ and acetic acid.
Solution
Among the given groups, - $NH-CO-,-CH_{3}$ and - $C_{6}H_{5}$ are present in acetanilide.