Home
Class 12
CHEMISTRY
An organic compound 'A' burns with a soo...

An organic compound 'A' burns with a sooty flame . It is negative towards Tollen's reagent test and positive for Borsche's reagent test . The compound 'A' is

A

Benzaldehyde

B

Acetophenone

C

Acetone

D

Salicylic acid

Text Solution

Verified by Experts

The correct Answer is:
B

Ignition test - burning with a sooty flame indicates presence of aromatic compound .
Negative test toward's Tollen's reagent indicates absence of aldehydes .
Positive test for Borsche's reagent test indicates ketones (possibility of aldehydes being nullified) .
So 'A' is an aromatic ketone .
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2010

    KCET PREVIOUS YEAR PAPERS|Exercise Chemistry|60 Videos
  • KARNATAKA CET 2013

    KCET PREVIOUS YEAR PAPERS|Exercise Chemistry|58 Videos

Similar Questions

Explore conceptually related problems

An organic compound burns with a sooty flame. Is it saturated or unsaturated compounds.

An organic compound burns with a sooty flame. Is it saturated or unsaturated compound ? Justify.

Tollen's reagent test can be performed to detect :

Positive Tollens test Compound (A) is :

Which of the following acid give positive Tollen's reagent test.

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2012-CHEMISTRY
  1. Which of the following is not true for S(N) 1 reaction ?

    Text Solution

    |

  2. Oil of winter green is

    Text Solution

    |

  3. An organic compound 'A' burns with a sooty flame . It is negative towa...

    Text Solution

    |

  4. For a reaction : A to B to Products , the rate of the reaction at va...

    Text Solution

    |

  5. Which one of the following has no unpaired electrons ?

    Text Solution

    |

  6. The atomic number of cobalt is 27 . The EAN of cobalt in Na(3)[Co(NO(2...

    Text Solution

    |

  7. The "spin only" magnetic moment of Ni^(2+) in aqueous solution would b...

    Text Solution

    |

  8. Impossible orbital among the following is

    Text Solution

    |

  9. The total number of electrons in 18 mL of water (density = 1 g mL^(-1)...

    Text Solution

    |

  10. The number of moles of hydrogen that can be added to 1 mole of an oil ...

    Text Solution

    |

  11. The reaction between sodium and water can be made less vigorous by

    Text Solution

    |

  12. All colloidal dispersions have

    Text Solution

    |

  13. Silver iodide is used for producing artificial rain because AgI

    Text Solution

    |

  14. The equilibrium constant of a reaction is 0.008 at 298 K. The standard...

    Text Solution

    |

  15. Function of potassium ethylxanthate in froth floatation process is...

    Text Solution

    |

  16. The correct order of electronegativities of N,O,F and P is

    Text Solution

    |

  17. The s-block element used as a catalyst in the manufacture of Buna-S ru...

    Text Solution

    |

  18. Which of the following is not a characteristic of a covalent compound ...

    Text Solution

    |

  19. The volume of 0.1 M oxalic acid that can be completely oxidized by 20 ...

    Text Solution

    |

  20. A ligand is

    Text Solution

    |