Class 12 Exam > Class 12 Questions > Directions: In the following questions, A st...
Start Learning for Free
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.
Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false and R is True
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Directions: In the following questions, A statement of Assertion (A) ...
Assertion (A) Explained
The assertion states that aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.
- This statement is true.
- The Gabriel Phthalimide synthesis is a method used to prepare primary amines, particularly aromatic amines, by the nucleophilic substitution of phthalimide's anion with an alkyl halide.
Reason (R) Explained
The reason given is that aryl halides do not undergo nucleophilic substitution with the anion formed by phthalimide.
- This statement is also true.
- Aryl halides are generally resistant to nucleophilic substitution reactions due to the stability of the aromatic ring, which makes it less likely for a nucleophile (like the anion from phthalimide) to attack the carbon attached to the halide.
Conclusion on A and R
- While both A and R are true, R does not provide a correct explanation for A.
- The Gabriel synthesis does work for preparing aromatic 1° amines, even though aryl halides do not allow direct nucleophilic substitution. Instead, the process involves forming the anion from phthalimide and using it to react with a suitable alkyl halide to create an intermediate, which can then be hydrolyzed to yield the aromatic amine.
Final Answer
Therefore, the correct choice is option D: A is false and R is true.
The assertion states that aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.
- This statement is true.
- The Gabriel Phthalimide synthesis is a method used to prepare primary amines, particularly aromatic amines, by the nucleophilic substitution of phthalimide's anion with an alkyl halide.
Reason (R) Explained
The reason given is that aryl halides do not undergo nucleophilic substitution with the anion formed by phthalimide.
- This statement is also true.
- Aryl halides are generally resistant to nucleophilic substitution reactions due to the stability of the aromatic ring, which makes it less likely for a nucleophile (like the anion from phthalimide) to attack the carbon attached to the halide.
Conclusion on A and R
- While both A and R are true, R does not provide a correct explanation for A.
- The Gabriel synthesis does work for preparing aromatic 1° amines, even though aryl halides do not allow direct nucleophilic substitution. Instead, the process involves forming the anion from phthalimide and using it to react with a suitable alkyl halide to create an intermediate, which can then be hydrolyzed to yield the aromatic amine.
Final Answer
Therefore, the correct choice is option D: A is false and R is true.
Community Answer
Directions: In the following questions, A statement of Assertion (A) ...
Aromatic 1° amines cannot be prepared by Gabriel Phthalimide synthesis because aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.
|
Explore Courses for Class 12 exam
|
|
Similar Class 12 Doubts
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer?
Question Description
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer?.
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Aromatic 1° amines can be prepared by Gabriel Phthalimide synthesis.Reason (R): Aryl halides do not undergo nucleophilic substitution with anion formed by phthalimide.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup