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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.
Assertion : Nitrating mixture used for carrying out nitration of benzene consists of conc. HNO3+ conc. H2SO4
Reason : In presence of H2SO4, HNO3 acts as a base and produces NO2+ ions.
  • a)
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • b)
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • c)
    If the Assertion is correct but Reason is incorrect.
  • d)
    If both the Assertion and Reason are incorrect.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Directions: These questions consist of two statements, each printed a...
The assertion in this question states that the nitrating mixture used for the nitration of benzene consists of concentrated nitric acid (HNO3) and concentrated sulfuric acid (H2SO4). This is correct. In the nitration of benzene, a mixture of concentrated nitric acid and concentrated sulfuric acid is typically used as the nitrating agent.

The reason given for this assertion is that in the presence of sulfuric acid, nitric acid acts as a base and produces nitronium ions (NO2+). This is also correct. Nitronium ions are intermediates that are formed in the nitration of aromatic compounds, such as benzene. When nitric acid is mixed with concentrated sulfuric acid, the resulting mixture is highly acidic and can effectively transfer the nitronium ions to the aromatic compound, leading to the substitution of a nitro group onto the aromatic ring.
Therefore, both the assertion and the reason are correct, and the reason given is a correct explanation of the assertion. In this case, the correct answer is option 'A'.

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Most Upvoted Answer
Directions: These questions consist of two statements, each printed a...
Assertion: Nitrating mixture used for carrying out nitration of benzene consists of concentrated HNO3 and concentrated H2SO4.
Reason: In the presence of H2SO4, HNO3 acts as a base and produces NO2 ions.

Explanation:
The nitration of benzene is a chemical reaction in which a nitro group (-NO2) is introduced into the benzene ring. This reaction is carried out using a nitrating mixture, which typically consists of concentrated nitric acid (HNO3) and concentrated sulfuric acid (H2SO4).

Reasoning:
The presence of concentrated sulfuric acid (H2SO4) in the nitrating mixture is crucial for the nitration reaction. H2SO4 acts as a catalyst and plays a vital role in the reaction. When HNO3 is mixed with H2SO4, it forms an intermediate species called nitronium ion (NO2+). This nitronium ion is highly reactive and serves as an electrophile in the nitration reaction.

Assertion Explanation:
The assertion states that the nitrating mixture used for benzene nitration consists of concentrated HNO3 and concentrated H2SO4. This is true because both acids are essential for the successful nitration of benzene. Concentrated HNO3 provides the nitro group, and concentrated H2SO4 acts as a catalyst and helps in the formation of the electrophilic nitronium ion.

Reason Explanation:
The reason given is that in the presence of H2SO4, HNO3 acts as a base and produces NO2 ions. This statement is partially correct. HNO3 is not acting as a base in this reaction but rather as a reactant. H2SO4, on the other hand, acts as a catalyst and facilitates the formation of the nitronium ion (NO2+), which is responsible for the nitration of benzene.

Conclusion:
Both the assertion and the reason are correct. However, the reason is not a correct explanation of the assertion. The reason incorrectly states that HNO3 acts as a base in the presence of H2SO4, while in reality, it acts as a reactant to form the nitronium ion. Therefore, the correct answer is option 'b'.
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Directions: These questions consist of two statements, each printed a...
The correct option is A If both assertion and reason are true and the reason is the correct explanation of the assertion.
HNO3+2H2SO4⇋ 2HSO4+ NO2++ H3O+
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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Nitrating mixture used for carrying out nitration of benzene consists of conc. HNO3+ conc. H2SO4Reason : In presence of H2SO4, HNO3 acts as a base and produces NO2+ ions.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Nitrating mixture used for carrying out nitration of benzene consists of conc. HNO3+ conc. H2SO4Reason : In presence of H2SO4, HNO3 acts as a base and produces NO2+ ions.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Nitrating mixture used for carrying out nitration of benzene consists of conc. HNO3+ conc. H2SO4Reason : In presence of H2SO4, HNO3 acts as a base and produces NO2+ ions.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Nitrating mixture used for carrying out nitration of benzene consists of conc. HNO3+ conc. H2SO4Reason : In presence of H2SO4, HNO3 acts as a base and produces NO2+ ions.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
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