Which of the following statement is true?
Show Hint
- Dehydration of alcohol takes place in presence of HCl/ZnCl\(_2\).
- Formation of ethene from ethyl iodide occurs on heating with aqueous KOH.
- Hydrogenation of an unsymmetrical alkyne in presence of Pd/C gives cis-alkene.
- Hydrogenation of an unsymmetrical alkyne in presence of Na/liqu. NH\(_3\) gives cis-alkene.
- The order of reactivity of hydrogen halides towards alkenes is HI<HBr<HCl.
The Correct Option is C
Solution and Explanation
In the presence of palladium on carbon (Pd/C), hydrogenation of an unsymmetrical alkyne leads to the formation of the cis-alkene via a syn-addition mechanism.
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