NEET Chemistry SN1 & SN2 Reactions MCQ Question
Which of the following combinations correctly describe the characteristics and mechanisms of SN1 and SN2 reactions?
SN1 reactions involve a stable carbocation intermediate and are favored by tertiary haloalkanes.
SN2 reactions require a strong nucleophile and proceed through a two-step mechanism.
SN1 reactions lead to racemization in products when a chiral center is involved.
SN2 reactions are characterized by a single concerted step and result in inversion of configuration at the chiral center.
Correct Answer
Detailed Explanation
SN1 reactions do involve a stable carbocation intermediate, typically more stable with tertiary haloalkanes, while SN2 reactions are characterized by a single concerted step and inversion of configuration. However, option B incorrectly describes SN2 as a two-step mechanism, and option C is correct about racemization in SN1 but does not fully encompass the distinct features of both reaction types.
Found an issue with this question?