JEE Chemistry · Easy

Hydrocarbons: Alkene addition MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Alkene additionEasyQuestion 770002

Question

Markovnikov's rule predicts that in HX addition to CH₂=CHCH₃:
  1. A
    H adds to CH₂ (less substituted C) and X to CH (more substituted C)
    Correct
  2. B
    X adds to CH₂ and H to CH
  3. C
    Equal amounts of both products
  4. D
    No reaction

Correct answer

H adds to CH₂ (less substituted C) and X to CH (more substituted C)

Explanation

Markovnikov's rule: H adds to the carbon with more H atoms (less substituted). The more stable (more substituted) carbocation intermediate forms: CH₃−CH⁺−CH₃ (2°) rather than CH₃−CH−CH₂⁺ (1°).