Home
Class 12
CHEMISTRY
Vanillin A[C8H8O3] is isolated from vani...

Vanillin `A[C_8H_8O_3]` is isolated from vanilla beans. It gives intense blue colour with neutral `FeCl_3` and also gives+ve Tollen's test. It reacts with conc. HBr to give a compound B. One mole of vanillin gave one mole of AgI with Zeise's active methoxy estimations. Compound B on oxidation with Tollen's reagent gave a catechol derivative. Compound B can be prepared from catechol by Gattermann Koch reaction.
Vanillin structure should be

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    PATHFINDER|Exercise QUESTION BANK|54 Videos

  • HALOALKANES AND HALOARENES

    PATHFINDER|Exercise QUESTION BANK|222 Videos

Similar Questions

Explore conceptually related problems

How does glucose react with Tollen's reagent?

Which one does not give positive Tollen's test-

Write the reactions between D(+) Glucose and (a) Tollen's reagent (b) NaBH_4 .

An element A occupies group number 15 and period number 3, reacts with chlorine to give compound B. The compound Bon hydrolysis gives a dibasic acidC. The compound C on heating undergoes auto oxidation and reduction to give a tribasic acid D. Identify the element A, compound B,C and D. Write the reactions.

Formic acid reduces Tollen's reagent, but acetic acid does not-Give reasons.

An aldehyde (A) (C_(11)H_(8)O) , which does not undergo self aldol condensation, gives benzaldehyde and 2 mol of (B) on ozonolysis. Compound (B) on oxidation with silver ion gives oxalic acid. Identify the compounds (A) and (B).

Give one example of 1315 compounds.

An isotope of hydrogen reacts with oxygen to give compound (A), which is used as a moderator in nuclear reactor. Like hydrogen, this isotope also undergoes addition reaction. It reacts with ethylene to give compound B, which is a saturated hydrocarbon. Identify the element A and B. A is radioactive.

PATHFINDER-FG-1 (ALCOHOLS, PHENOLS & ETHERS)-QUESTION BANK
  1. 1.00 g of a non-electrolyte solute (molar mass 250g/mol) was dissolved...

    Text Solution

    |

  2. Humans, monkeys and guinea pigs do not have the enzymes necessary for ...

    Text Solution

    |

  3. Vanillin A[C8H8O3] is isolated from vanilla beans. It gives intense bl...

    Text Solution

    |

  4. Vanillin A[C8H8O3] is isolated from vanilla beans. It gives intense bl...

    Text Solution

    |

  5. Match Column -1 with Column-11

    Text Solution

    |

  6. Suppose the elements X and Y combine to form two compounds XY2 and X3Y...

    Text Solution

    |

  7. Match Column -1 with Column-11

    Text Solution

    |

  8. What is the maximum value of x?

    Text Solution

    |

  9. What is the ratio of moles of formic acid obtained in reaction (a) and...

    Text Solution

    |

  10. The degree of unsaturation of the final products is

    Text Solution

    |

  11. A violet coloured complex of Fe(III)in Which number of phenyl group(s)...

    Text Solution

    |

  12. 0.1 mole of a hydroxyl compound reacts with 62.5 g PCl5(mol.wt.208.5) ...

    Text Solution

    |

  13. Identify (X) and (Y) in the following reaction sequence.

    Text Solution

    |

  14. Compound X (Molecular formula, C5H8O) does not react appreciably with ...

    Text Solution

    |

  15. Compound (A) C7H8O is insoluble in NaHCO3 solution but dissolves in so...

    Text Solution

    |

  16. When t-butanol and n-butanol are separately treated with a few drops o...

    Text Solution

    |

  17. An optically active alcohol A(C6H10O) absorbs two mole of hydrogen mol...

    Text Solution

    |

  18. Give reason for the following in one or two sentences. "Acid catalysed...

    Text Solution

    |

  19. Convert

    Text Solution

    |

  20. An organic liquid (A) Having pleasant odour is hydrolysed to an acid (...

    Text Solution

    |