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NEET levelSingle correct optionDifficulty 1 of 3ro021

Birch reduction of benzene (Na, liquid , ethanol) gives

  1. Acyclohexa-1,3-diene
  2. Bcyclohexa-1,4-diene
  3. Ccyclohexene
  4. Dcyclohexane

Answer: B

Two electrons and two protons are added to the ring at para positions, giving the non-conjugated 1,4-diene.
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