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  4. Hydrogenation of the adjoining compound in the presence of poisoned palladium catalyst gives

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Q. Hydrogenation of the adjoining compound in the presence of poisoned palladium catalyst givesChemistry Question Image

IIT JEEIIT JEE 2000Hydrocarbons

Solution:

Hydrogenation with poisoned palladium brings about cis hydrogenation of alkyne and does not affect double bonds :

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