Q31 / 180 · AIIMS 2019 (25 May) · Chemistry

Assertion : $\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$ is less basic than $\left(\mathrm{CH}_3\right)_3 \mathrm{~N}$ in aqueous solution. Reason : Hyperconjugation in $\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$ is more than that in $\left(\mathrm{CH}_3\right)_3 \mathrm{~N}$.

  • A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • Correct answer
    D
    If both assertion and reason are false.

Solution

$2^{\circ}$ amine is more basic than $3^{\circ}$ amine. Hyperconjugation in $\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$ is less than that in $\left(\mathrm{CH}_3\right)_3 \mathrm{~N}$.

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

Relevant Questions