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Q.

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

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a

Alkaline K2Cr2O7

b

Pyridinium chloro chromate

c

Chromic anhydride in glacial acetic acid

d

Acidic KMnO4

answer is C.

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Detailed Solution

Consider the structure of pent-3-en-2-ol
 

Question Image

Then we will convert this into pent-3-en-2-one,

Question Image

Other reagents may give over oxidised products.
Hence, the correct option (C). Chromic anhydride in glacial acetic acid

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