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Q. Aldehydes can be oxidised by :

UPSEEUPSEE 2005

Solution:

Aldehydes are strong oxidising agents they oxidise Tollen's reagent (ammoniacal $AgNO _{3}$ to $Ag$ ), Fehling solution (to $Cu _{2} O$ ) and Benedict solution to $Cu _{2} O$. The reactions are used to detect presence of aldehyde group in compound.