MolSynapsequestion bank
MolSynapse / Question bank / Hydrocarbons / Alkenes: preparation and addition reactions
JEE Main levelSingle correct optionDifficulty 2 of 3hc027

1,2-Dimethylcyclohexene is hydrogenated with over . The major product is

  1. Atrans-1,2-dimethylcyclohexane
  2. Ban equimolar mixture of cis and trans isomers
  3. Cmethylcyclohexane
  4. Dcis-1,2-dimethylcyclohexane

Answer: D

Both hydrogens are delivered from the catalyst surface to the same face of the double bond (syn addition). The two methyl groups are then pushed to the other face together, so they are cis.
Practice Hydrocarbons More on Alkenes: preparation and addition reactions
Previous questionNext question

More questions on Alkenes: preparation and addition reactions