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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones.
Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.
Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones.
Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.
- a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.
- b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.
- c)Assertion is true but Reason is false.
- d)Assertion is false but Reason is true.
Correct answer is 'C'. Can you explain this answer?
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In the following question, a Statement of Assertion (A) is given follo...
Reason is false because in highly acidic medium protonation of hydrazine occur which decrease nucleophilic character of NH2=NH2!
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In the following question, a Statement of Assertion (A) is given follo...
Assertion (A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones.
Reason (R): Hydrazones of aldehydes and ketones are prepared in highly acidic medium.
Explanation:
Assertion: Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones.
The assertion is true. Carbonyl compounds, such as aldehydes and ketones, react with phenyl hydrazine (C6H5NHNH2) to form phenyl hydrazones. The reaction involves the nucleophilic addition of the nitrogen lone pair of phenyl hydrazine to the carbonyl carbon of the aldehyde or ketone, followed by the elimination of a water molecule. The resulting product is a phenyl hydrazone, which has a C=N double bond.
Reason: Hydrazones of aldehydes and ketones are prepared in highly acidic medium.
The reason is false. Hydrazones of aldehydes and ketones are not prepared in highly acidic medium. The reaction between carbonyl compounds and phenyl hydrazine to form phenyl hydrazones does not require a highly acidic medium. In fact, the reaction can be carried out in neutral or slightly acidic conditions.
The formation of phenyl hydrazones occurs through a nucleophilic addition-elimination mechanism, where the nucleophile (phenyl hydrazine) attacks the carbonyl carbon, resulting in the formation of a hydrazone. The reaction does not involve the use of strong acids.
Therefore, the correct answer is option (c) Assertion is true but Reason is false.
Reason (R): Hydrazones of aldehydes and ketones are prepared in highly acidic medium.
Explanation:
Assertion: Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones.
The assertion is true. Carbonyl compounds, such as aldehydes and ketones, react with phenyl hydrazine (C6H5NHNH2) to form phenyl hydrazones. The reaction involves the nucleophilic addition of the nitrogen lone pair of phenyl hydrazine to the carbonyl carbon of the aldehyde or ketone, followed by the elimination of a water molecule. The resulting product is a phenyl hydrazone, which has a C=N double bond.
Reason: Hydrazones of aldehydes and ketones are prepared in highly acidic medium.
The reason is false. Hydrazones of aldehydes and ketones are not prepared in highly acidic medium. The reaction between carbonyl compounds and phenyl hydrazine to form phenyl hydrazones does not require a highly acidic medium. In fact, the reaction can be carried out in neutral or slightly acidic conditions.
The formation of phenyl hydrazones occurs through a nucleophilic addition-elimination mechanism, where the nucleophile (phenyl hydrazine) attacks the carbonyl carbon, resulting in the formation of a hydrazone. The reaction does not involve the use of strong acids.
Therefore, the correct answer is option (c) Assertion is true but Reason is false.
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is 'C'. Can you explain this answer?
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is 'C'. Can you explain this answer?.
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Carbonyl compounds react with phenyl hydrazine to form phenyl hydrazones. Reason(R): Hydrozones of aldehydes and ketones are prepared in highly acidic medium.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.c)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is 'C'. Can you explain this answer?.
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