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NEET CHEMISTRYMedium

The major product in the above mentioned reaction is:

A

(Structure Missing)

B

(Structure Missing)

C

4

D

(Structure Missing)

Step-by-Step Solution

  1. Missing Data: The question refers to an 'above mentioned reaction' and provides options which are likely chemical structures. Neither the reaction scheme (reactants/reagents) nor the structural options are present in the input text.
  2. Context (AIPMT 2012): Based on the tags (AIPMT 2012, Alkenes - Chemical Properties), this question typically involves the acid-catalyzed hydration or addition of halogen acids to an alkene. A common AIPMT 2012 question involves the reaction of an alkene like 3,3-dimethylbut-1-ene with dilute H2SO4H_2SO_4 or HClHCl.
  3. Probable Mechanism (Hydration/Addition):
  • Step 1: Protonation of the double bond according to Markovnikov's rule to form a secondary carbocation.
  • Step 2: Rearrangement (1,2-methyl shift) of the secondary carbocation to a more stable tertiary carbocation [NCERT 11th, Ch 13, Sec 13.3.4].
  • Step 3: Attack by the nucleophile (H2OH_2O or Cl−Cl^-) on the stable tertiary carbocation to form the major product (e.g., 2,3-dimethylbutan-2-ol).
  1. Conclusion: Without the specific reaction image, the exact chemical identity cannot be confirmed, though the principle likely involves carbocation rearrangement.
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