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NEET levelSingle correct optionDifficulty 1 of 3g2056

Which of the following is the strongest base in aqueous solution?

A $CH X_{3} NH X_{2}$
B $C X_{6} H X_{5} NH X_{2}$
C $(C X_{6} H X_{5}) X_{2} NH$
D $CH X_{3} CONH X_{2}$

Answer: A

Methylamine has a localised lone pair on N made richer by the

+ I

methyl group. In aniline and diphenylamine the lone pair is delocalised into the ring, and in the amide into the C=O group. Hence

CH X_{3} NH X_{2}

is strongest.

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