MCQ
Catalyst used in Rosenmund reduction is
- ✓$Pd /$ $BaS{O_4}$
- B$Zn-Hg$ $couple$
- C$LiAl{H_4}$
- D$Ni/{H_2}$
Barium sulfate reduces the activity of palladium due to its low surface area, thereby preventing over reduction.
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Reason : $\overset{\centerdot \,\,\centerdot }{\mathop{N}}\,{{H}_{2}}$ is more electron donating than $\overset{\centerdot \,\centerdot \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{O{{C}_{2}}{{H}_{5}}}}\,$
