The most stable reagent for the conversion of RCH2OH to RCHO is.

A
PCC (pyridinium chlorochromate)
B
${KMnO}_{4}$
C
$K_{2} {Cr}_{2} O_{7}$
D
${CrO}_{3}$

Solution:

Pyridinium chlorochromate is a suitable reagent to convert an alcoholic group to an aldehydic group. The rest of the three are stronger oxidizing agent.

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