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JEE Main levelSingle correct optionDifficulty 2 of 3nm072

The IUPAC name of $CH X_{3} - CO - NH - CH X_{2} - CH X_{3}$ is:

AN-methylpropanamide
BN-ethylmethanamide
CN-acetylethanamine
DN-ethylethanamide

Answer: D

The acyl part

CH X_{3} CO X^{-}

makes the parent ethanamide. The ethyl group sits on nitrogen, so it is cited with locant N. The name is N-ethylethanamide.

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