This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemistry of Carbohydrates, Amino sugars, and Mucopolysaccharides, Subject name: Biochemistry
Benedict test is for- 
Select and explain. 
A. Bile salts in urine, B. Bile pigment in urine, C. Reducing sugar in urine, D. Ketone bodies in urine
C: Reducing sugar in urine
Answer: C: Reducing sugar in urine 
Explanation: Ans. is 'c' i.e.. Reducing sugar in urine o Benedict's test-Reducing sugars in urineo Fehling's test-Reducing sugars in urine TestsUsed foro Rothera's test (nitroprusside test)o Gerhardt's test (ferric chloride test)Ketone bodies in urine :- acetone and acetoacetateKetone bodies in urine :-acetoacetate.o Benedict's testo Fehling's testReducing sugars in urineReducing sugars in urineo Hay's sulpher testBile salts in urineo Fouchet's (borium sulphate test)o Gmelin's (nitric acid) testo Vanden Bergh testo Ehrlich's testo Schlesinger's testBile pigment: bilirubinBile pigment: bilirubinBile pigment: bilirubinBilinogens (stercobilinogen, urobilinogen)Bilins (stercobilin, urobilin).o Ehrlich's aldehyde testPorphobilinogenQ and urobilinogen in urineo Ehrlich s aldehyde test is used for urobilinogen & porphobilinogen,o Tests for cholesterol include --- Salwoski, Liebermann, Ziemann.o Tests for charbohydrates include --- Molish for all sugars, Selwenojf(D-fructose), Fearons.o Rothera's test is false positive in --- presence of other ketones e.g. in PKU.o In Ninhydrin reaction all amino acid give blue colour except proline and hydroxy-proline which give yellow colour.