Qualitative Analysis

(i) **Test:** Tollen’s Test or Fehling’s Test
- Propanal (aldehyde) gives positive test → forms silver mirror (Tollen’s) or red ppt (Fehling’s). - Propanone (ketone) gives negative test. (ii) Benzaldehyde and Benzoic acid
Solution:
(ii) **Test:** Sodium bicarbonate (NaHCO ) test
- Benzoic acid reacts with NaHCO → brisk effervescence (CO )
- Benzaldehyde shows no reaction