Home
Class 12
CHEMISTRY
(NH(4))(2)Cr(2)O(7)( Ammonium dichromate...

`(NH_(4))_(2)Cr_(2)O_(7)(` Ammonium dichromate ) is used in fire works. The green coloured powder blown in air is

A

`Cr_(2)O_(3)`

B

`CrO_(2)`

C

`Cr_(2)O_(4)`

D

`CrO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`(NH_(4))Cr_(2)O_(7) overset(Delta)(to) N_(2)+Cr_(2)O_(3)+H_(2)O`
`Cr_(2)O_(3)` is used as a green pigment in fire-works.
Promotional Banner

Topper's Solved these Questions

  • D AND F BLOCK ELEMENTS

    BANSAL|Exercise Exercise-2 (Paragraph Type)|18 Videos

  • D AND F BLOCK ELEMENTS

    BANSAL|Exercise EXERCISE-3 (Miscellaneous Exercise)|10 Videos

  • D AND F BLOCK ELEMENTS

    BANSAL|Exercise Exercise|3 Videos

  • CARBOXYLIC ACID DERIVATIVES

    BANSAL|Exercise Exercise 3|23 Videos

  • GENERAL ORGANIC CHEMISTRY

    BANSAL|Exercise Exercise 3|19 Videos

Similar Questions

Explore conceptually related problems

Ammonium dichromate is used in some fire works. The green coloured powder blown in air is

Ammonium dichromate is used in some fireworks. The green-coloured powder blown in the air is

When (NH_(4))_(2)Cr_(2)O_(7) is heated, the gas evolved is

(NH_(4))_(2)Cr_(2)O_(7) overset("heat") to

(NH_(4))_(2)Cr_(2)O_(7) on heating gives a gas which is also given by :

BANSAL-D AND F BLOCK ELEMENTS-Exercise-1 (Single Correct Choice Type)
  1. The equilibrium Cr(2)O(7)^(2-)hArr 2CrO(4)^(2-)

    Text Solution

    |

  2. When the same amount of Zn is treated with excess of H(2)SO(4) and exc...

    Text Solution

    |

  3. (NH(4))(2)Cr(2)O(7)( Ammonium dichromate ) is used in fire works. The ...

    Text Solution

    |

  4. The d-block elements which is a liquid at room temperature, having hig...

    Text Solution

    |

  5. Coinage metals show the properties of

    Text Solution

    |

  6. Cr(2)O(7)^(2-)underset(Y)overset(X)hArr 2CrO(4)^(2-)X and Y are respec...

    Text Solution

    |

  7. CrO(3) dissolves in aqueous NaOH to give:

    Text Solution

    |

  8. An ornament of gold having 75% of gold, is of carat.

    Text Solution

    |

  9. Solution of MnO(4)^(-) is purple-coloured due to :

    Text Solution

    |

  10. Transition elements having more tendency to form complex than represen...

    Text Solution

    |

  11. uarr Y(g)overset(KI)(larr)CuSO(4)overset(dilH(2)SO(4))(rarr)X(Bluecolo...

    Text Solution

    |

  12. The actinoids exhibit more number of oxidation states in general than ...

    Text Solution

    |

  13. x,y and z are respectively

    Text Solution

    |

  14. underset(("bot"))(Cu+conc.HNO(3))toCu(NO(3))(2)+X (oxide of nitrogen...

    Text Solution

    |

  15. Pick out the incorrect statement:

    Text Solution

    |

  16. The metals present in insulin and haemoglobin are respectively:

    Text Solution

    |

  17. Metre scales are madeup of alloy:

    Text Solution

    |

  18. A metal M which is not affected by strong acids like conc. HNO(3),conc...

    Text Solution

    |

  19. underset(("Acidified"))(KMnO(4))+HCltoH(2)O+X(g),X is a:

    Text Solution

    |

  20. Amongst the following species, maximum covalent character is exhibited...

    Text Solution

    |