The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is

Acidic permanganate

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Acidic dichromate

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Chromic anhydride in glacial acetic acid

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Pyridinium chloro-chromate

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Solution

The correct option is C Chromic anhydride in glacial acetic acid
Strong oxidising agents like acidified $K M n O_{4}$ or $K_{2} C r_{2} O_{7}$ oxidised alcohols to carboxylic acids. For oxidation of primary alcohols to ketones, Pyridinium chloro-chromate(PCC) is used and for oxidation of secondary alcohols to ketones, Chromic anhydride in glacial acetic acid is used.

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