Home
Class 12
CHEMISTRY
When an aqueous solution of D-glucose is...

When an aqueous solution of D-glucose is treated with a base, it is converted into D-fructose and D-mannose, this conversion (isomerisation) involves

A

enolization

B

tautomerization

C

both a and b

D

none of the two

Text Solution

Verified by Experts

The correct Answer is:
C
Lobry de Bruyn-van Ekenstein rearrangement D.Glucose `hArr` D. Mannose `hArr` D.Fructose
`alpha - D- "glucose" hArr beta - D- "glucose"`
Promotional Banner

Topper's Solved these Questions

  • CARBOHYDRATES

    AAKASH SERIES|Exercise Practice Sheet-5|30 Videos

  • CARBOHYDRATES

    AAKASH SERIES|Exercise Practice Sheet-3|30 Videos

  • BIOMOLECULES

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE-4 (ASSERTION (A) & REASON (R) TYPE QUESTIONS :)|84 Videos

  • CARBOXYLIC ACIDS

    AAKASH SERIES|Exercise PRACTICE SHEET-4 (Integer Type Questions)|9 Videos

Similar Questions

Explore conceptually related problems

What happens when D - glucose is treated with the following reagents:

D -Glucose shows mutarotation because,

.What are A,B,C and D in these conversions ?

In an aquose solution of D-Glucose the percentage of alpha and beta anomers at equilibrium condition are respectively

D- glucose and L - glucose differ in

Enumerate the reactions of D-glucose which cannot be explained by its open chain structure.

Wrire the ring structure of D-glucose. What are their names ?

When alpha-D glucose is dissolved in water it undergoes a partial conversion to beta-D glucose to exhibit mutarotation. This conversion stops when 66.6% of glucose is in beta from K_(C) for the mutarotation alpha-D -glucose hArr beta - D- glucose, is

AAKASH SERIES-CARBOHYDRATES-Practice Sheet-4
  1. Which set of terms correctly identifies the carbohydrate shown ? ...

    Text Solution

    |

  2. Which is true about the acidic character of hydroxyl groups of sugar a...

    Text Solution

    |

  3. When an aqueous solution of D-glucose is treated with a base, it is co...

    Text Solution

    |

  4. When alpha-D glucose is dissolved in water it undergoes a partial conv...

    Text Solution

    |

  5. The number of chiral carbons are present in cyclic form of Allose and ...

    Text Solution

    |

  6. Which of the following structures represent alpha-D- glucopyranose

    Text Solution

    |

  7. A sample of water containing some dissolved table sugar and common sal...

    Text Solution

    |

  8. Glucose reacts with PCl(5) product is

    Text Solution

    |

  9. Reduction of hexose A (Molecular formula C(6)H(12)O(6)) with sodium bo...

    Text Solution

    |

  10. The following carbohydrate is

    Text Solution

    |

  11. Which of the following statements are correct

    Text Solution

    |

  12. Similarities between D(+) Glucose and D(-) Fructose : correct statemen...

    Text Solution

    |

  13. Glucose does not react with

    Text Solution

    |

  14. Consider the following statements, correct statements

    Text Solution

    |

  15. The number of correct statements are

    Text Solution

    |

  16. Which two of the following aldohexoses give the same osazone derivativ...

    Text Solution

    |

  17. D underset((A))("Glucopyranose") underset("dry HCl")overset(MeOH)rarr ...

    Text Solution

    |

  18. D underset((A))("Glucopyranose") underset("dry HCl")overset(MeOH)rarr ...

    Text Solution

    |

  19. D underset((A))("Glucopyranose") underset("dry HCl")overset(MeOH)rarr ...

    Text Solution

    |

  20. Three carbohydrate molecules A, B and C were analysed by a scientist f...

    Text Solution

    |