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  4. What happens when 2-butyne reacts with H2 in presence of Nickel Boride or Lindlar’s catalyst (Pd/CaCO3 — PbO)

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Q. What happens when 2-butyne reacts with H2 in presence of Nickel Boride or Lindlar’s catalyst (Pd/CaCO3 — PbO)

NTA AbhyasNTA Abhyas 2022

Solution:

Lindlar’s catalyst give syn hydrogenation reactions with alkynes.
2-butyne forms cis-2-butene with Lindlar’s catalyst.