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Boverset(Li ndlar)rarrR-C-=C-Roverset(Na...

`Boverset(Li ndlar)rarrR-C-=C-Roverset(Na // liq. NH_(3))rarrA.`
`A` and `B` are geometrica isomers `(R-CH=CH-R)`

A

`A` is trans, `B` is cis

B

`A` and `B` both are cis

C

`A` and `B` both are trans

D

`A` is cis, `B` is trans

Text Solution

Verified by Experts

The correct Answer is:
A
In the presence of Lindlar's catalyst addition up to alkyne takes place in cis manner but in the presence of `Na+NH_(3) (` liq. `)` addition up to alkyne is in trans manner.
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