Question

CH$_3$-C$\equiv$C-CH$_3$ \(\xrightarrow{\text{H}_2/\text{Pd-CaCO}_3}\) (X) \(\xrightarrow{\text{Na/Liq. NH}_3}\) (Y) Select the correct statement:

• A. Boiling point of X<Y
• B. Dipole moment Y>X
• C. X and Y are stereoisomers of each other
• D. Melting point of X>Y

Hint:

Cis and trans isomers are geometrical isomers, a type of stereoisomer that differs in the spatial arrangement of substituents around a double bond.

Answer 1

The Correct Option is C

Step 1: Identify the compounds X and Y.
X is cis-1-butene, and Y is trans-2-butene, as the reactions involve catalytic hydrogenation and reduction with Na in liquid ammonia. These transformations change the geometry of the alkene, leading to cis and trans isomers.
Step 2: Conclusion.
Since cis- and trans- isomers are stereoisomers, the correct answer is (3).