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  4. The most suitable reagent for the conversion of RCH2OH xrightarrow[]RCHO is

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Q. The most suitable reagent for the conversion of $ RC{{H}_{2}}OH\xrightarrow[{}]{{}}RCHO $ is

ManipalManipal 2010Alcohols Phenols and Ethers

Solution:

By oxidation, alcohols are converted into aldehydes. Hence, mild oxidising agent like PCC is used to convert alcohols into aldehydes.
$RCH _{2} OH \xrightarrow{PCC} RCHO$
Strong oxidising agents like acidified $KMnO _{4}$ acidified $K _{2} Cr _{2} O _{7}$ if used, convert alcohols directly into acids, thus they are not used for oxidation of alcohol to aldehydes.