# The best reagent to convert pent$- 3 - en - 2 - ol$ and pent$- 3 - en - 2 - one$ is:A.Acidic permanganateB.Acidic dichromateC.Chromic anhydride in glacial acetic acidD.Pyridinium chlorochromate

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Hint: At first think about the reagents which convert the alcohol to a ketone. The reaction of alcohol to a ketone is nothing but oxidation of alcohol. Oxidation of alcohol is also known as dehydrogenation reaction.

The structures of pent$- 3 - en - 2 - ol$and pent$- 3 - en - 2 - one$ are
$C{H_3} - CH = CH - CH(OH) - C{H_3}$and $C{H_3} - CH = CH - CH(O) - C{H_3}$ respectively.
From the above structure, we can say that alcohol is a tertiary alcohol. The tertiary alcohol does not undergo oxidation due to a lack of $\alpha$ hydrogen.