Q. and can be distinguished by

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Solution:

By neutral only allylic and phenol can be distinguished.
By and 2,4-DNP: ketone and aldehyde both can give test.
Ketone and aldehyde can be distinguished by Tollen's reagent, Fehling's solution and Schiff's reagent.
(ketone) and (aldehyde) can be distinguished by Tollen's reagent. reacts with Tollen's reagent to give silver mirror while
Silver mirror
No reaction