Q10 · CSIR-NET Chemistry, December 2019

Paper: CSIR-NET December 2019 · Subject: Organic Chemistry · Chapter: General Organic Chemistry · Topic: Acidity Basicity · Marks: 2 · Difficulty: Hard

The correct order of basicity of the following compounds is Question structure 1 of 4, ABC26OR0065 Question structure 2 of 4, ABC26OR0065 Question structure 3 of 4, ABC26OR0065 Question structure 4 of 4, ABC26OR0065 A B C D
(a)B $>$ A $>$ C $>$ D
(b)D $>$ B $>$ C $>$ A
(c)C $>$ D $>$ B $>$ A
(d)B $>$ A $>$ D $>$ C
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Conjugate-acid pKa values: CH₃CN ~31 (B), CH₃NO₂ ~10 (A), p-nitrobenzoic acid 3.4 (D), picric acid 0.4 (C). Basicity B > A > D > C (d).

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