The document describes experiments to identify the presence of carbohydrates, proteins, and functional groups in organic compounds. Molisch, Fehling's, Benedict's, and Tollen's tests confirmed the presence of reducing sugars. Biuret, xanthoproteic, and ninhydrin tests identified the presence of proteins. Tests using ceric ammonium nitrate, ferric chloride, and phthalein dye identified alcoholic and phenolic groups. Aldol condensation, Fehling's, Benedict's and Tollen's tests revealed the presence of aldehydes and ketones. Sodium bicarbonate and ester formation tests confirmed the presence of carboxylic acids. Tube A contained