| ⇦ | 
| ⇨ |
The most basic amine among the following is
Options
(a) p-toluidine
(b) o-nitroaniline
(c) p-nitroaniline
(d) 2,4-dinitroaniline
Correct Answer:
p-toluidine
Explanation:
Basicity of amines increases with the presence of electron releasing groups and decreases with the presence of electron withdrawing group. Among the give options, only p-toluidine has aniline with an electron donating -CH₃ group which, by virtue of its +I-effect, increases the electron density on N-atom and makes electrons more available for protonation. In o-nitroaniline, p-nitroaniline and 2,4-dinitroaniline, due to presence of electron withdrawing -NO₂ group, the electron density on N-atom is diminished. Thus, it is less basic. Similarly for p-fluoroaniline.
Related Questions: - The number of primary, secondary and tertiary carbons in 3,4-dimethylheptane
- In a buffer solution containing equal concentration of B⁻ and HB,
- Which one of the following statements about the nitro group in organic compound
- The maximum number of molecules is present in
- Number of σ and π- bonds in acetylene is
Topics: Organic compounds containing Nitrogen
(87)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The number of primary, secondary and tertiary carbons in 3,4-dimethylheptane
- In a buffer solution containing equal concentration of B⁻ and HB,
- Which one of the following statements about the nitro group in organic compound
- The maximum number of molecules is present in
- Number of σ and π- bonds in acetylene is
Topics: Organic compounds containing Nitrogen (87)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply