$2-$ Hexyne gives trans$-2-$Hexene on treatment with :

$2-$ Hexyne gives trans$-2-$Hexene on treatment with :
  1. $\mathrm{Pt} / \mathrm{H}_2$
  2. $\mathrm{Li} / \mathrm{NH}_3$
  3. $\mathrm{Pd} / \mathrm{BaSO}_4$
  4. $\mathrm{LiAlH}_4$

Asked in: JEE Main 2012 (Offline)

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