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JEE Main Chemistry question

ChemistryAldehydes, Ketones and Carboxylic AcidsJEE Main

Formaldehyde and formic acid can be distinguished by:

Answer: (D)

Solution

Both compounds reduce Tollens' reagent and Fehling's solution (both have an aldehyde-type –CHO linkage), so these fail to distinguish them; but only

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Question ID VK-150112