First slide

Alkynes

Question

Select the correct option(s) about A&B of the following reaction

Moderate

A

both A and B are alkenes
B

A is trans isomer and B is cis isomer
C

A and B will have same molecular formula
D

All of the above

Solution

Alkynes undergo syn hydrogenation in the presence of Lindlars’ catalyst and forms cis alkene. Alkynes undergo anti hydrogenation in the presence of Na/liq. NH3 and forms trans alkene.

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