Home
Class 12
CHEMISTRY
What will happen when D-(+)- glucose is ...

What will happen when `D-(+)-` glucose is treated with methanolic `HCl` followed by Tollen's reagent ?

A

A black ppt. will be formed

B

A red ppt. will be formed

C

A green colour will appear

D

No characteristic colour or ppt. will be formed.

Text Solution

Verified by Experts

The correct Answer is:
D
Reaction of `D-(+)-`glucose with methanolic `-HCl` leads to formation of methyl glucoside `(C_(1)-OH` group is methlated which, being acetal. Is not hydrolysable by base, so it will not respond Tollen's reagent.
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    A2Z|Exercise Chemistry in everyday life|7 Videos

  • ALDEHYDES, KETONES AND CARBOXYLIC ACID

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • CHEMICAL KINETICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

What is Tollen's reagent?

What happens when D-glucose is treated with (i) HI (ii) HNO_(3) (Conc.) ?

A2Z-BIOMOLECULES-Section D - Chapter End Test
  1. Compounds I and II may be grouped as

    Text Solution

    |

  2. Which of the following statement is correct regardiing the drawbacks o...

    Text Solution

    |

  3. What will happen when D-(+)- glucose is treated with methanolic HCl fo...

    Text Solution

    |

  4. Which is true acidic character of hydroxyl groups of sugars and hydrox...

    Text Solution

    |

  5. which of the following forms cationic micelles above certain concentra...

    Text Solution

    |

  6. Which of the nitrogenof histidine is first protonated ?

    Text Solution

    |

  7. An electric current is passed through an aqueous solution ( buffered a...

    Text Solution

    |

  8. Which one of the following is employed as a tranquilizer ?

    Text Solution

    |

  9. The degree of cystallinity of which of the following is highest

    Text Solution

    |

  10. When condensation product of hexamethylenediamine and adipic acid is h...

    Text Solution

    |

  11. In the following series of reactions, compound Z can be Z+NH(3) over...

    Text Solution

    |

  12. Anomers are those stereoisomers which differ in the configuration at

    Text Solution

    |

  13. In osazone formation, glucose reacts with three molecules of phenylhyd...

    Text Solution

    |

  14. The compound required for the formation in 'salon' are :

    Text Solution

    |

  15. The compound required for the formation of a thermosetting polymer wi...

    Text Solution

    |

  16. alpha- amino acids are

    Text Solution

    |

  17. Identify the structures of products A and B in the following reaction ...

    Text Solution

    |

  18. An organic compound consumes 4 moles of periodic acid to from followin...

    Text Solution

    |

  19. The rol of phosphate in detergent water is to

    Text Solution

    |

  20. An optically pure compound A, gave an [alpha](D)^(25)=+30^(@), while ...

    Text Solution

    |