A urine sample of a patient, tested with Benedict/Fehling solution, gave an orange colored precipitate, indicating the presence of

The orange-colored precipitate formed in a urine sample when tested with Benedict/Fehling solution indicates the presence of glucose. Benedict/Fehling solution is a chemical test used to detect the presence of reducing sugars in a solution. When Benedict/Fehling solution is added to a solution containing a reducing sugar, such as glucose, the blue solution changes to an orange-red precipitate due to the reduction of copper ions in the solution to copper oxide. This reaction occurs because reducing sugars such as glucose can donate electrons to other molecules and reduce them, such as the copper ions in the Benedict/Fehling solution. Therefore, the correct answer is glucose, which is a reducing sugar that can be detected with Benedict/Fehling solution when present in a urine sample.