Home
Class 12
CHEMISTRY
Ammonium dichromate is used in some fire...

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

A

`CrO_3`

B

`Cr_2O_3`

C

Cr

D

`CrO (O_2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`(NH_4)_2Cr_2O_7 oversetDeltato Cr_2O_3 + 4H_2O + N_2`
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|50 Videos

  • ORGANIC COMPOUNDS CONTAINGING NITROGEN

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|40 Videos

  • POLYMERS

    MARVEL PUBLICATION|Exercise TEST YOUR GRAP|35 Videos

Similar Questions

Explore conceptually related problems

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

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

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

Which of the following is used to remove the green colour from glass?

When SO_(2) gas is allowed to react with acidified potassium dichromate solution , the yellow colour of the solution changes to green. This is due to the formation of

Which of the following statement (s) is /are correct? (I) In acidic solution dichromate ions are converted to chromate ions . (II) An acidified solution of K_(2)Cr_(2)O_(7) liberates iodine from iodides. (III) Potassium dichromate is used as a titrant for Fe^(2+) ions. (IV) Ammonium dichromate on heating undergo exothermic decomposition to give Cr_(2)O_(3) . Choose the correct option .

MARVEL PUBLICATION-P-BLOCK ELEMENTS -TEST YOUR GRASP
  1. Ammonium dichromate is used in some fireworks. The green-coloured powd...

    Text Solution

    |

  2. The element which forms oxides in all oxidation states +1 to +5 is.

    Text Solution

    |

  3. With Nesslers reagent, ammonia gives brown precipitate due to formatio...

    Text Solution

    |

  4. Oxide of nitrogen used as an oxidiser for rocket fuels in missiles and...

    Text Solution

    |

  5. Oxide of nitrogen which acts as oxidising as well as reducing agent is

    Text Solution

    |

  6. A group 16 element exists in monoatomic state in the metallic lattice....

    Text Solution

    |

  7. What is the hybridization of S in SF6 ?

    Text Solution

    |

  8. When dipped in conc. HNO3, metals like iron, chromium, nickel, alumini...

    Text Solution

    |

  9. Laughing gas has chemical formula

    Text Solution

    |

  10. A solution of colourless salt H on boiling with axcess NaOH produces a...

    Text Solution

    |

  11. When chloride is passed over dry slaked lime at room temperature the m...

    Text Solution

    |

  12. When I(2) is dissolved in C Cl(4), the colour that results is

    Text Solution

    |

  13. Fluorine does not show positive oxidation states due to the absence of

    Text Solution

    |

  14. The hybridisation of xenon in XeF2 is

    Text Solution

    |

  15. An inert gas atoms

    Text Solution

    |

  16. Argon is used in arc welding because of its

    Text Solution

    |

  17. Nitrogen shows oxidation state +5, but it does not form pentahalide as

    Text Solution

    |

  18. PCl3 fumes in moisture because

    Text Solution

    |

  19. Which of the following statement is correct?

    Text Solution

    |

  20. S-S bond is present in

    Text Solution

    |

  21. The chemical formula of baryte, the salt of sulphur is

    Text Solution

    |