A) \[Zn/Hg\]
B) \[Pd/BaS{{O}_{4}}\]
C) Raney \[Ni\]
D) \[Na\] in ethanol
Correct Answer: B
Solution :
In the Rosenmunds reaction the acid chlorides are converted to corresponding aldehydes by catalytic reaction. This reaction is carried in the presence of palladium deposited over barium sulphate. \[\underset{acetyl\,\,chloride}{\mathop{C{{H}_{3}}-C-Cl+{{H}_{2}}}}\,\xrightarrow{Pd.\,\,BaS{{O}_{4}}}\underset{acetaldehyde}{\mathop{C{{H}_{3}}CHO}}\,+HCl\]
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