A) \[Cr{{O}_{3}}\] in anhydrous medium.
B) \[KMn{{O}_{4}}\] in acidic medium.
C) Pyridinium chlorochromate.
D) Heat in the presence of Cu at 573 K.
Correct Answer: B
Solution :
\[KMn{{O}_{4}}\] will oxidise initially formed aldehydes to carboxylic acid.
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