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ChemistryNEET 2019Alkenes and alkynes: addition reactions, Markovnikov

Hydrocarbons

The most suitable reagent for converting but-2-yne (H3C-C≡C-CH3\mathrm{H_3C\text{-}C{\equiv}C\text{-}CH_3}) into cis-2-butene is:

  1. A.Na / liquid NH3\mathrm{NH_3}
  2. B.H2\mathrm{H_2}, Pd/C, quinoline (Lindlar's catalyst)✓
  3. C.Zn/HCl
  4. D.Hg2+/H+\mathrm{Hg^{2+}/H^+}, H2O\mathrm{H_2O}

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