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ChemistryAldehydes and KetonesVITEEEVITEEE 2011
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2643 Upvotes Verified Answer
The correct answer is:
In presence of $\mathrm{SeO}_{2}$ compounds containing active methylene (i.e., $\mathrm{CH}_{2}$ next to the carbonyl group) oxidises to another $\mathrm{CO}$ group.

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