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JEE Main levelSingle correct optionDifficulty 2 of 3o2069

2-Methylbutane is heated with in the presence of light. The major monobromo product is

  1. A1-bromo-2-methylbutane
  2. B2-bromo-3-methylbutane
  3. C1-bromo-3-methylbutane
  4. D2-bromo-2-methylbutane

Answer: D

Bromine radical is highly selective and abstracts the weakest C-H bond, the tertiary one, giving the tertiary radical . This radical abstracts Br from to give 2-bromo-2-methylbutane.
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