Conversion of ethyl alcohol to acetaldehyde is an example of

Given data : It is given to identify  conversion of ethyl alcohol to acetaldehyde as an example of the given options.

Explanation

The oxidizing agent in pyridinium chlorochromate is used here. Therefore, as it oxidizes the resulting aldehydes are vulnerable to further oxidation and produce carboxylic acid. Aldehydes are removed from the distillate as soon as possible to avoid this. Ketones, on the other hand, are difficult to further oxidize, so their yield in the reaction is quite high.

${\mathrm{CH}}_3{\mathrm{CH}}_2-\mathrm{OH}\underset{Oxidation}{\overset{PCC}{\to }}{\mathrm{CH}}_3-\mathrm{CHO}$

Hence, the correct option  (D). oxidation.