1.

The strongest base among the following agent.

Answer»

2, 4, 6-Trinitro-N, N-dimethylaniline
ANILINE
2, 4, 6-Trinitroaniline
N, N-Dimethylaniline.

Solution :
Presence of TWO bulky `NO_(2)` GROUPS at `o-`positions to N-atom does not allow the lone pair on N to take part in resonance. This INCREASES the availability of lone pair on nitrogen. Further, the presence of two methyl groups increase, the basic character due to `+I` effect of `CH_(3)`. This makes 2, 4, 6-Trinitro`-N`, N-dimethyl aniline most basic, out of the given four CHOICES


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