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JEE Main levelSingle correct optionDifficulty 2 of 3o2068

Which one of the following alkanes gives only one monochloro derivative on reaction with and light?

  1. Abutane
  2. B2-methylpropane
  3. Cpropane
  4. D2,2-dimethylpropane

Answer: D

In 2,2-dimethylpropane, , all twelve hydrogens are equivalent, so only forms. 2-Methylpropane, butane and propane each give 2 constitutional products.
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