Home
Class 12
CHEMISTRY
The ore cromite contsins FeO and...

The ore cromite contsins FeO and

A

`CrO_(3)`

B

`ZnCO_(3)`

C

`Cr_(2)O_(3)`

D

`CrO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMPOUNDS CONTAINING NITROGEN

    NIKITA PUBLICATION|Exercise MCQ|418 Videos
  • ELECTROCHEMISTRY

    NIKITA PUBLICATION|Exercise Questions From Competitive Exam|46 Videos

Similar Questions

Explore conceptually related problems

How many ores are sulphide ores from the given ores ? Azurite, chalcoite,iron pyrites,limonite.

Do the plant cells contsin centriole ?

The Gibbs energy for the decomposition of FeO at 600^@ C is as follows FeO rarr Fe + (1)/(2) O_2 Delta_r G = 856 kJ//"mole" the potential difference needed for electrolytic reduction of FeO at 600^@ C is at least.

The chief ores of iron are haemalite (Fe_2O_3) , magnetite (Fe_3O_4) , limonite (FeO(OH)) and siderite (FeCO_3) .In the extraction of iron , oxides ores of iron, after concentration through calcination/roasting in reverberatory furnace are mixed with lime stone and coke and fed into a blast furnace. Here, the oxide is reduced to the metal. Which of the following is obtained as a slag in the extraction of iron from haematite ore ?

The chief ores of iron are haemalite (Fe_2O_3) , magnetite (Fe_3O_4) , limonite (FeO(OH)) and siderite (FeCO_3) .In the extraction of iron , oxides ores of iron, after concentration through calcination/roasting in reverberatory furnace are mixed with lime stone and coke and fed into a blast furnace. Here, the oxide is reduced to the metal. Reducing species in the extractive metallurgy of iron from haematite ore is :

Weight of oxygen in Fe_(2)O_(3) and FeO is in the simple ratio of:

When copper pyrites is roasted in excess of air, a mixture of CuO + FeO is formed. FeO is present as impurity. This can be removed as slag during reduction of CuO . The flux added to form slag is

NIKITA PUBLICATION-D-AND F-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS
  1. The atomic radii of transition elements in a period are.

    Text Solution

    |

  2. Which of the following d-block elements has d^(10) configuration ?

    Text Solution

    |

  3. The ore cromite contsins FeO and

    Text Solution

    |

  4. An atom with atomic number 21 belongs to the category of

    Text Solution

    |

  5. The highest magnetic moments is shown by the transition metal ion wit...

    Text Solution

    |

  6. Which of the following pair of ions have the same number of unpaired e...

    Text Solution

    |

  7. A transition element X has a configuration [Ar] 3d^(4) in its + 3 oxi...

    Text Solution

    |

  8. The maximum number of transition metal elements that can be accommodat...

    Text Solution

    |

  9. The pair of atoms with anomalous (exceptional) electron congigurations

    Text Solution

    |

  10. The transition metals possess strong binding jforce because of

    Text Solution

    |

  11. Least paramagnetic property is shown by

    Text Solution

    |

  12. Transition metals from

    Text Solution

    |

  13. Which one of the following represents the electronic configuration of ...

    Text Solution

    |

  14. Transition metals are less reactive because of their

    Text Solution

    |

  15. The number of d-electrons in Fe ^(+2) ion is equal to that of

    Text Solution

    |

  16. Which one of the following is an example of non-typical transition ele...

    Text Solution

    |

  17. Transition metal exhibits an oxidation state grater than +2 due to los...

    Text Solution

    |

  18. The stable oxidation state likely to be shown by first row transition ...

    Text Solution

    |

  19. Interstitial compounds are formed by

    Text Solution

    |

  20. The pair of elements which can show +1 odidation state.

    Text Solution

    |