Which reagent will convert 2-Hexyne to trans-2-Hexene?

1. Li/NH3

2. Pd/BaSO4

3. LiAlH4

4. Pt/H2

Subtopic:  Aliphatic Hydrocarbon - Methods of Preparation | Alkanes, Alkenes and Alkynes - Chemical Properties |
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Consider the reaction,

Major product is:
1. 2.
3. 4.
Subtopic:  Aliphatic Hydrocarbon - Methods of Preparation |
 66%
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