Carbohydrate MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 22, 2025

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1. : What are the constituents of the structure of ‘Agar’, the common culture medium for microbes in the laboratory?



2. : Treatment of sucrose with conc. HNO₃ provides which of the following?



3. : Glucose and fructose react with which reagent to give similar product?



4. : Epimers are compounds that vary in



5. : Method used to ascent the series of aldoses is called



6. : Mutarotation is exhibited by



7. : In ______ a freshly prepared solution of glucose has a specific rotation of +110° but on keeping for some time it changes to +52.7°.



8. : Though fructose is laevorotatory yet its name is written as D-fructose. This ‘D’ prefix indicates which of the following?



9. : Configuration of carbohydrates relative to glyceraldehydes was suggested by which of the following?



10. : A specific diagnostic test for carbohydrates is



11. : Glucose and mannose may be obtained by Kiliani synthesis from which of the following?



12. : Acetylation of fructose yields a



13. : Although glucose has an aldehydic group it does not restore pink colour of Schiff’s reagent. It is because



14. : In _______ Isomers differ in configuration at the asymmetric carbon produced due to hemiacetal ring formation in carbohydrates.



15. : The ring structure of glucose does not explain _______.



16. : Hydrolysis of methyl glucoside tetramethyl-D followed by oxidation provides which of the following?



17. : Which of the polysaccharide on hydrolysis provides only fructose?



18. : Which of the following is the test that may be used to distinguish between glucose and fructose?



19. : Which is not a method for determining ring size in carbohydrates?



20. : Nucleoside adenosine on hydrolysis gives which of the following?



21. : Carbohydrates are characterized by the presence of which of the following?



22. : Which is not a polysaccharide?



23. : Which interaction is not a stabilizing factor in the 3-D structure of polysaccharides?



24. : Which is an epimer of glucose?



25. : Which is true regarding open chain structure of glucose?



26. : Which disaccharide contains α-1→1-glycosidic linkage?



27. : Honey is rich in the hydrolytic product of which of the following?



28. : Which of the following is a polymeric unit of starch which has branched structure?



29. : Which disaccharide is not a plant product?



30. : Which is true about the structure of cellulose?



31. : What is the general formula for polysaccharides?



32. : Which is the distinguishing test between monosaccharides and disaccharides?



33. : The copper in Barfoed’s Solution is not reduced by which of the following?



34. : Iodine solution provides no colour with which of the following?



35. : Which is not a polymer of D-Glucose?



36. : What is the reason for the selection of furanose (ribose) rather than pyranose (glucose) for nucleic acids?



37. : Which has been isolated from human heart muscles?



38. : Benedict’s test is likely to give weakly positive results with concentrated urine due to the action of



39. : Dextran is a polymer of glucose units. What type of linkages is predominant in its structure?



40. : Which carbohydrate makes the terminal residue in ‘O’ substance (H-antigen) – the mother antigen of ‘ABO’ blood group substances?



41. : Chitin that forms the exoskeleton of crustaceans consists of:



42. : Which is considered as the most abundant organic compound in the biosphere?



43. : Which carbohydrate is polymerized through β-1,4 glycosidic linkages?



44. : β-Amylase of malt hydrolyzes starch by:



45. : Phosphorylation of carbohydrates makes the molecule anionic. What could be the purpose of this ionization?



46. : What is the systematic name of sucrose?



47. : Which oligosaccharide mediates the binding of H. pylori to the gastric mucosa?



48. : In patients with uncontrolled diabetes mellitus, which metabolic change is true?



49. : During the synthesis of sucrose, glucose is activated to which moiety?



50. : In the presence of dilute alkali, monosaccharides undergo reversible isomerisation. What is the name of this reaction?



 

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