| ⇦ | 
| ⇨ |
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: - If the enthalpy change for the transition of liquid water to steam
- Reaction of a carbonyl compound with one of the following reagents involves
- An ion has 18 electrons in the outermost shell, it is
- Which of the following statement is correct
- The boiling point of heavy water is
Topics: Organic compounds containing Nitrogen
(87)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the enthalpy change for the transition of liquid water to steam
- Reaction of a carbonyl compound with one of the following reagents involves
- An ion has 18 electrons in the outermost shell, it is
- Which of the following statement is correct
- The boiling point of heavy water 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