MixedMediumQuestion 790013
Question
Fehling's solution gives a brick-red precipitate with:
- AGlucose and aliphatic aldehydes (not aromatic)Correct
- BAll aldehydes
- CKetones only
- DCarboxylic acids
Correct answer
Glucose and aliphatic aldehydes (not aromatic)
Explanation
Fehling's solution (Cu²⁺ in alkaline tartrate) is reduced by aliphatic aldehydes and sugars to Cu₂O (brick-red precipitate). Aromatic aldehydes (benzaldehyde) and ketones do NOT reduce Fehling's.