Home
Class 12
CHEMISTRY
When phenol reacts with phtalic anhydrid...

When phenol reacts with phtalic anhydride in presence of `H_2SO_4 ` and heated and hot raction mixture is pourd in ` NaOH` solution. The product formed is

A

alizarin

B

methyl orange

C

fluorescein

D

phenolphthalein .

Text Solution

Verified by Experts

The correct Answer is:
D
Phenol couples with phthalic anhydride in presence of conc. `H_(2)SO_(4)` to form phenolphthalein which is used as an indicator :
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2007

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

  • AIIMS 2009

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

Phenol is heated with phthalic anhydride in the presence of conc. H_(2)SO_(4) . The product gives pink colour with alkali. The product is

Phenol when condensed with phthalic anhydride in the presence of conc. H_(2)SO_(4) , yields ,

On heating the mixture of NaOH and CO at 483 K the product formed is :

Phenol reacts with benzoyl chloride in the presence of dilute NaOH to form

When propanamide is reacted with Br_(2) and NaOH, the product formed is :

Iodine reacts with hot NaOH solution. The products are NaI and ……………………

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2008-CHEMISTRY
  1. Acid hydrolysis of sucrose is a

    Text Solution

    |

  2. Which of these compound is synthesised by chloral?

    Text Solution

    |

  3. When phenol reacts with phtalic anhydride in presence of H2SO4 and he...

    Text Solution

    |

  4. The function of AlCl3 in Friedel-Craft's raction is to

    Text Solution

    |

  5. The correct order of increasing [H3O^+] in the following aqueous solut...

    Text Solution

    |

  6. Percentage of Se (at. mass 3 78.4) in peroxidase anhydrase enzyme is 0...

    Text Solution

    |

  7. The number of S-S bonds, in sulpher trioxide trimer (S(3)O(9)) is :

    Text Solution

    |

  8. Oxidaton product 1,2-eyelopentanediol with HlO4 gives

    Text Solution

    |

  9. The correct order of dipole moment is :

    Text Solution

    |

  10. The root mean square speed of the molecules of diatomic gas is u. When...

    Text Solution

    |

  11. For the following concentration cell, to be spontancous Pt(H2)P1 atm....

    Text Solution

    |

  12. Which one of the following is not a sufactant?

    Text Solution

    |

  13. The standard oxidation potential E^@ for the half cell reaction are ...

    Text Solution

    |

  14. To observe the effect of concentration on the conductivity ele

    Text Solution

    |

  15. A unit of cell of sodium chloride has four formula units. The edge len...

    Text Solution

    |

  16. The reaction R-underset(O)underset(||)C-R underset(H2SO4)overset(N3...

    Text Solution

    |

  17. Which of the following amines, can give N-nitrosoamine on treatment wi...

    Text Solution

    |

  18. The purification of alumina is called

    Text Solution

    |

  19. Which acid has P -P linkage?

    Text Solution

    |

  20. C6H6underset(H2SO4)overset(HNO3)rarrXunderset(FeCl3)overset(Cl2)rarrY ...

    Text Solution

    |