MCQ
Hydrogenation of $2-$ Butyne in the presence of Lindlar's catalyst gives
- ✓Cis $- 2-$ Butene
- BTrans $- 2-$ Butene
- CButane
- D$1-$ Butene

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$(a)$ $X < Y < Z$ $(b) X < Z < Y$
$(c) Y < Z < X$ $(d) Z < Y < X$
ethyne $\xrightarrow[\begin{smallmatrix}
(2)\,\,excess\,I-\,C{{H}_{2}}\,-\,{{(C{{H}_{2}})}_{2}}-\,C{{H}_{3}} \\
(3)\,\,{{H}^{\oplus }}
\end{smallmatrix}]{(1)\,\,excess\,NaN{{H}_{2}}}$