Al B points) Give the functional groups that represent the following tests. 1. Positive observation with ceric ammonium nitrate and negative with jane teugent + aldehydes we 2. Positive observed solid with hensberg reagent and insoluble in acidic medium Pamine 3. Positive with iodoform test, negative with Fehling and positive with sodium metal. alcohol 4. Positive with sodium bicarbonate solution Carboxylic acid