JEE MAIN - Chemistry (2005 - No. 51)

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

Acidic permanganate

Acidic dichromate

Chromic anhydride in glacial acetic acid

Pyridinium chloro – chromate

Pyridiminum chloro-chromate $$(PCC)$$ is specific for the conversion.