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JEE Main levelSingle correct optionDifficulty 2 of 3si264

Reductive ozonolysis of an alkene gives only two products, the ketone shown and ethanal. Which alkene is it?

  1. AStructure A
  2. BStructure B
  3. CStructure C
  4. DStructure D

Answer: A

The ketone shown is propanone, which comes from a end; ethanal comes from a end. So the alkene is , A (2-methylbut-2-ene). B gives only ethanal, C only propanone, and D gives methanal and butanone.
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