Home
Class 12
CHEMISTRY
In the borax test of Co^(2+) , the blue ...

In the borax test of `Co^(2+)` , the blue colour of bead is due to the formation of

A

`B_(2)O_(3)`

B

`Co_(3)B_(2)`

C

`CO(BO_(2))_(2)`

D

CoO

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • Salt Analysis

    MOTION|Exercise Exercise - 2 (Level-II)|27 Videos
  • Salt Analysis

    MOTION|Exercise Exercise - 4 | Level-I|4 Videos
  • Salt Analysis

    MOTION|Exercise Exercise - 1|69 Videos
  • S-BLOCK

    MOTION|Exercise EXERCISE - 3 Level - II Previous Year | JEE adv|4 Videos
  • SOLID STATE

    MOTION|Exercise Exercise - 4 | Level-II|9 Videos

Similar Questions

Explore conceptually related problems

The borax bead is due to formation of

The deep blue colour of compound (D) is due to the formation of:

In Lassaigne's test for nitrogen,the blue colour is due to the formation of

In Lassaigne's test for nitrogen the blue colour is due to the formation of

In Lassaigne's test for the detection of nitrogen, the blue colouration is due to the formation of

Borax bead test is based upon the formation of

MOTION-Salt Analysis-Exercise - 2 (Level-I)
  1. A green ore (A) of a metal present as a double /mixed compound is trea...

    Text Solution

    |

  2. A green ore (A) of a metal present as a double /mixed compound is trea...

    Text Solution

    |

  3. Three separate samples of a solution of a single salt gave these resul...

    Text Solution

    |

  4. Which one of the following ionic species will impart colour to an aque...

    Text Solution

    |

  5. Which is not dissolved in dil. HCl?

    Text Solution

    |

  6. The only cations present in a slightly acidic solution are Fe^(3+),Zn^...

    Text Solution

    |

  7. Which of the following leaves no residue on heating ?

    Text Solution

    |

  8. A metal X on heating in nitrogen gas gives Y,Y on treatment with H(2)O...

    Text Solution

    |

  9. Which of the following gives blood red colour with KCNS?

    Text Solution

    |

  10. Which of the following is (are) soluble in excess of NaOH ?

    Text Solution

    |

  11. In the borax test of Co^(2+) , the blue colour of bead is due to the f...

    Text Solution

    |

  12. Mercurous ion is represent as

    Text Solution

    |

  13. The metal ion which is precipitated when H(2)S is passed with HCl is

    Text Solution

    |

  14. Read of the following statements and choose the correct code w.r.t. tr...

    Text Solution

    |

  15. MgSO(4) on reaction with NH(4)OH and Na(2)HPO(4) forms a white crystal...

    Text Solution

    |

  16. In Nessler's reagents, the ion present is :

    Text Solution

    |

  17. Which one has the minimum solubility product ?

    Text Solution

    |

  18. When H(2)S gas is passed thorugh the HCl containing aqueous solution o...

    Text Solution

    |

  19. Mark the correct statement :

    Text Solution

    |

  20. When a substance A reacts with water it produces a combustible gas B a...

    Text Solution

    |