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Question: Answered & Verified by Expert
\( 2 \)-butyne is reduced to trans-but-2-ene using
ChemistryHydrocarbonsKCETKCET 2019
Options:
  • A \( H_{2} \mid P d-C \)
  • B \( \mathrm{Zn} \) in dil. \( \mathrm{HCl} \)
  • C \( \mathrm{OH}_{2} \mid \mathrm{Ni} \)
  • D \( \mathrm{Na} \) in liq. \( \mathrm{NH}_{3} \)
Solution:
1072 Upvotes Verified Answer
The correct answer is: \( \mathrm{Na} \) in liq. \( \mathrm{NH}_{3} \)
(D)
Birch reduction
\[
=\frac{\mathrm{Na}_{\mathrm{a}}}{\operatorname{liq}_{\mathrm{in}} \mathrm{NH}_{3}}=
\]

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