Q79 / 180 · AIIMS 2004 · Chemistry

The strongest base among the following is

  • A
    Figure
  • B
    Figure
  • Correct answer
    C
    Figure
  • D
    Figure

Solution

The basicity is a measure of a compound's ability to accept a proton $\left(\mathrm{H}^{+}\right)$. (2) and (4) are weaker bases as the lone pair are involved in resonance. In (a) carbon adjacent to $\mathrm{N}$ is $s p^2$ hybridised hence is more electronegative therefore, pulls the electron density from nitrogen.

Hence, the correct answer is option: 'C'.

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