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  4. Which reagent is capable of giving test both of Aldehyde and ketones

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Q. Which reagent is capable of giving test both of Aldehyde and ketones

UPSEEUPSEE 2018

Solution:

Both aldehydes and ketone reacts with $2,\, 4\, DNP$ to form yellow, orange or red $ppt$. of $2,\,4$-dinitrophenylhydrazones.

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with Fehling solution, Shiff’ s reagent and Tollen reagent only aldehyde reacts. These are distinguishing test for aldehyde and ketones.