Home
Class 12
CHEMISTRY
The yellow coloured solution of chromate...

The yellow coloured solution of chromate salt changes to orange colour on acidification due to the formation of :

A

`Cr^(3+)`

B

`Cr_(2)O_(7)^(2-)`

C

`CrO_(4)^(-)`

D

`Cr_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`2CrO_(4)^(2-) + 2H^(+) underset("alkali")overset("acid")to underset("Orange")Cr_(2)O_(7)^(2-) + H_(2)O`
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY OF D-AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-II)|65 Videos

  • CHEMISTRY OF D-AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-III)|8 Videos

  • CHEMISTRY OF D-AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Recent Examination Questions|11 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    MODERN PUBLICATION|Exercise Recent Examination Questions|4 Videos

  • CHEMISTRY OF P - BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Recent Examination Questions|20 Videos

Similar Questions

Explore conceptually related problems

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

Blue colour of sea water is due to

Red colour of tomato is due to

Which ion gives coloured solution ?

The yellow colour of urine is due to the presence of

Yellow colour of usual nitric acid is due to the presence of :

MODERN PUBLICATION-CHEMISTRY OF D-AND F-BLOCK ELEMENTS-Multiple Choice Questions (Level -I) Transition metal compounds and their Characteristics
  1. Scandium resembles with aluminium in the following properties except :

    Text Solution

    |

  2. The yellow coloured solution of chromate salt changes to orange colour...

    Text Solution

    |

  3. MnO(4)^(-) ions can be reduced in strong alkaline medium to give :

    Text Solution

    |

  4. TiCl(4) fumes strongly in moist air and is hydrolysed by water to give...

    Text Solution

    |

  5. Which of the following is an acidic oxide ?

    Text Solution

    |

  6. The brown ring test for nitrites and nitrates is due to the formation ...

    Text Solution

    |

  7. When K(2)Cr(2)O(7) is heated with conc. H(2)SO(4) in the presence of a...

    Text Solution

    |

  8. Acidifed K(2)Cr(2)O(7) oxidises H(2)S to :

    Text Solution

    |

  9. The mass of gold in an 18 carat gold ring of 4 g is :

    Text Solution

    |

  10. Potassium permangante on heating gives :

    Text Solution

    |

  11. Mn(3)O(4) is a mixed oxide of :

    Text Solution

    |

  12. The reaction MnO(4)^(-) + e^(-) to MnO(4)^(2-) occur in

    Text Solution

    |

  13. Fe^(2+) and Fe^(3+) can be distinguished by :

    Text Solution

    |

  14. The equivalent weight of MnSO(4) is half of its molecular weight when ...

    Text Solution

    |

  15. When potassium dichromate crystals are heated with concentrated sulphu...

    Text Solution

    |

  16. Acidified potassium dichromate is treated with hydrogen sulphide, IN t...

    Text Solution

    |

  17. The oxidation states of Mn in K(2)MnO(4), KMnO(4) and Mn(2)O(7) are re...

    Text Solution

    |

  18. In Cr(2)O(7)^(2-) :

    Text Solution

    |

  19. In a redox reaction, how many moles of electrons are accepted by 1 mol...

    Text Solution

    |

  20. Cr(2)O(3) dissolves in aqueous NaOH in the presence of an oxidant to f...

    Text Solution

    |