Description : Mutarotation refers to change in (A) pH (B) Optical rotation (C) Conductance (D) Chemical properties
Last Answer : B
Description : α-D-glucose + 1120→ + 52.50 ← + 190 βD-glucose for glucose above represents (A) Optical isomerism (B) Mutarotation (C) Epimerisation (D) D and L isomerism
Description : Which of the following statements is false about glyceraldehyde? (a) Its IUPAC name is 1,2-dihydroxypropanal (b) It is isomeric with 1,3-dihydroxypropanone (c) It is optically active (d) It shows mutarotation
Last Answer : It shows mutarotation
Description : The mutarotation of glucose is characterized by : (a) a change from an aldehyde to ketone structure. (b) a change of specific rotation from a (+) to a (–) value. (c) the presence of an intramolecular bridge structure. (d) the irreversible change from α-D to the β-D form.
Last Answer : the presence of an intramolecular bridge structure.
Description : Mutarotation is a term related to (a) Interconversion of anomers (b) Relationship of D- and L- families (c) Hydrolysis of sucrose (d) Number of monsaccharides in a carbohydrate
Last Answer : Interconversion of anomers
Description : Which of the following statements is false about α-D-glucose? (a) it has a pyranose ring. (b) it is a hemiacetal. (c) it shows mutarotation. (d) it is the purest form of table sugar.
Last Answer : it is the purest form of table sugar.
Description : Which of the following is true about sucrose? (a) It hydrolyzes to fructose and glucose. (b) It is a reducing sugar. (c) It is a monosaccharide. (d) It undergoes mutarotation in water.
Last Answer : It hydrolyzes to fructose and glucose.
Description : Which of the following statements best describes the meaning of mutarotation ? (a) a rapid exchange between the α and β forms of diastereomeric sugars (b) a rapid exchange between the D ... between hydrogen and deuterated hydrogen (d) a slow change in optical rotation to reach an equilibrium value
Last Answer : a slow change in optical rotation to reach an equilibrium value