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Chemistry · PYQ NEET UG 2019(1)

हिन्दी

The most suitable reagent for the following conversion is _________. \( \text{H}_3\text{C}-\text{C}\equiv\text{C}-\text{CH}_3 \longrightarrow \text{cis-2-Butene} \)

  1. A
    \( \text{H}_2 \), \( \text{Pd/C} \), quinoline
  2. B
    \( \text{Zn/HCl} \)
  3. C
    \( \text{Hg}^{2+}/\text{H}^+ \), \( \text{H}_2\text{O} \)
  4. D
    \( \text{Na/liquid NH}_3 \)
View Answer & Solution

Correct answer · Option A

\( \text{H}_2 \), \( \text{Pd/C} \), quinoline

Explanation

Lindlar's catalyst (\( \text{H}_2\text{, Pd/C} \) poisoned with quinoline) reduces alkynes stereospecifically to cis-alkenes.
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