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12 grade chemistry others

Reaction of C₆H₅CH₂Br with aqueous sodium hydroxide follows: ______

  • A. S₁ mechanism
  • B. S₂ mechanism
  • C. Any of the above two depending upon the temperature of reaction
  • D. Saytzeff rule

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1 Year agoGrade
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1 Answer

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ApprovedApproved Tutor Answer1 Year ago

The reaction of C₆H₅CH₂Br (benzyl bromide) with aqueous sodium hydroxide primarily follows the SN2 mechanism. This is because the benzyl group is a good leaving group, and the reaction occurs in a polar protic solvent, which favors bimolecular nucleophilic substitution.

Key Points to Consider

  • SN2 Mechanism: This involves a single concerted step where the nucleophile attacks the substrate while the leaving group departs.
  • Temperature Influence: While temperature can affect reaction rates, the SN2 pathway is generally favored for this substrate under standard conditions.
  • Saytzeff Rule: This rule pertains to elimination reactions and is not directly applicable here since we are discussing substitution.

Therefore, the correct answer is A. SN2 mechanism.


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is Pradeep Chemistry+Ncert sufficient for all of the theory of Jee Mains Chemistry?


Hi, I’m a self-study JEE 2027 aspirant with a large 11th backlog. Since I don’t think 6–8 hour one-shots are sufficient to cover the full theory + breadth of problem types of a JEE chapter, I’ve shifted from lecture-based preparation to book-based self-study.


I have a problem with using NCERT as my primary chemistry source. In my experience, it is concise and information-heavy, but often lacks detailed explanations, systematic organisation of concepts, and categorisation of problem types. This seems especially problematic for Physical and Organic Chemistry, where I feel that simply reading NCERT may not give enough depth or problem-solving preparation.


So I’m considering this approach:


Pradeep Chemistry → complete the chapter thoroughly from Pradeep → then read NCERT for that chapter → solve JEE Main PYQs/problems.


My main question is:


Is Pradeep + NCERT sufficient as the complete theory source for JEE Main-level Chemistry?


In other words, after thoroughly completing a chapter from Pradeep and then NCERT, can I consider the theory part of that chapter complete for JEE Main, with only PYQs/problem practice remaining?


I’m asking specifically about JEE Main level, not Advanced.


Also, if Pradeep is not sufficient, what specific gap does it leave, and what would you recommend as a better book-based alternative for self-study?

Grade 1212 grade chemistry others

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