Question

Benedict's solution is used to test the presence of
(a) carbohydrates
(b) proteins
(c) fats
(d) vitamins

Answer 1

(a) Carbohydrates are tested by Benedict's test.
Benedict’s test is a chemical test that can be used to check for the presence of reducing sugars in a given analyte. Therefore, simple carbohydrates containing a free ketone or aldehyde functional group can be identified with this test. The test is based on Benedict’s reagent , which is a complex mixture of sodium citrate, sodium carbonate, and the pentahydrate of copper(II) sulfate.
When exposed to reducing sugars, the reactions undergone by Benedict’s reagent result in the formation of a brick-red precipitate, which indicates a positive Benedict’s test.