AIIMS 2019 Chemistry Basicity of Nitrogen Compounds Assertion Reason Question
Assertion: Pyridine is more basic than pyrrole.
Reason: In pyrrole, nitrogen has sp² hybridization and the lone pair of nitrogen is not available for donation.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Pyridine is more basic than pyrrole because the nitrogen atom in pyridine has a lone pair that is readily available for protonation, while in pyrrole, the lone pair is involved in the aromatic π-system due to sp² hybridization, making it less available for donation. This makes both the assertion and the reason true, with the reason correctly explaining why pyridine is more basic. Other options are incorrect because they either misrepresent the truth of the assertion or the reason, or fail to establish the correct relationship between them.
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