Home
Class 12
CHEMISTRY
(I) FeCr2 O4 + NaOH + air to (A) + Fe2O...

(I) ` FeCr_2 O_4 + NaOH + air to (A) + Fe_2O_3`
(II) `(A) + (B) to NaCr_2O_7`
(III) ` Na_2Cr_2O_7 + X overset(Delta)(to) Cr_2O_3 `
(IV) ` Cr_2O_3 + Y overset(Delta ) (to) Cr`
`Na_2CrO_4` and `Fe_2O_3` are separated by :

A

dissolving in conc. `H_2SO_4`

B

dissolving in `NH_3`

C

dissolving in `H_2O`

D

dissolving in dil. HCl

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • METALLURGY

    MOTION|Exercise EXERCISE 2 (LEVEL - II)|37 Videos

  • METALLURGY

    MOTION|Exercise EXERCISE 3|30 Videos

  • METALLURGY

    MOTION|Exercise EXERCISE 1|50 Videos

  • LIQUID SOLUTION

    MOTION|Exercise EXERCISE-4 (Level-II) PREVIOUS YEAR JEE ADVANCED|19 Videos

  • MOLE CONCEPT

    MOTION|Exercise EXERCISE - 4 LEVEL - II|13 Videos

Similar Questions

Explore conceptually related problems

(I) FeCr_2 O_4 + NaOH + air to (A) + Fe_2O_3 (II) (A) + (B) to NaCr_2O_7 (III) Na_2Cr_2O_7 + X overset(Delta)(to) Cr_2O_3 (IV) Cr_2O_3 + Y overset(Delta ) (to) Cr (X) and (Y) are :

(I) FeCr_2 O_4 + NaOH + air to (A) + Fe_2O_3 (II) (A) + (B) to NaCr_2O_7 (III) Na_2Cr_2O_7 + X overset(Delta)(to) Cr_2O_3 (IV) Cr_2O_3 + Y overset(Delta ) (to) Cr Compounds (A) and (B) are

FeCr_(2)O_(4)+NaOH+"air" to (A)+Fe_(2)O_(3) (A)+(B) to Na_(2)Cr_(2)O_(7) Na_(2)Cr_(2)O_(7)+X overset(Delta)to Cr_(2)O_(3) Cr_(2)O_(3)+Y overset(Delta)to Cr (X) and (Y) are :

K_2Cr_2O_7 overset(Delta)(to) ? + ? +?

FeCr_(2)O_(4)+NaOH+"air" to (A)+Fe_(2)O_(3) (A)+(B) to Na_(2)Cr_(2)O_(7) Na_(2)Cr_(2)O_(7)+X overset(Delta)to Cr_(2)O_(3) Cr_(2)O_(3)+Y overset(Delta)to Cr Compound (A) and (B) are :

MOTION-METALLURGY-EXERCISE 2 (LEVEL - I)
  1. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

    Text Solution

    |

  2. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

    Text Solution

    |

  3. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

    Text Solution

    |

  4. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

    Text Solution

    |

  5. In Froth floatation process for, pine oil functions oil functions as:

    Text Solution

    |

  6. Collectors are the subsances which help in attachment of an ore partic...

    Text Solution

    |

  7. Zone refinning is based on the principle of:

    Text Solution

    |

  8. Which of the following species is desirable substance in extraction of...

    Text Solution

    |

  9. Select correct statement regrading silver extraction//purification pro...

    Text Solution

    |

  10. Which of the following reaction does not occur in Bessemer’s converter...

    Text Solution

    |

  11. Dow’s process :

    Text Solution

    |

  12. In the cyanide process involving extraction of silver, zinc is used in...

    Text Solution

    |

  13. Carnallite does not contain :

    Text Solution

    |

  14. During initial treatment, preferential wetting of ore by oil and gangu...

    Text Solution

    |

  15. Silica is added to roasted copper during extraction in order to remove...

    Text Solution

    |

  16. The addition of high proportions of maganese makes steel useful in mak...

    Text Solution

    |

  17. Among the following statements, the incorrect one is

    Text Solution

    |

  18. In the commercial electrochemical process for aluminium extraction, th...

    Text Solution

    |

  19. Match column–I with column–II and select the correct answer using the ...

    Text Solution

    |

  20. Blister copper is refined by stirring molten impure metal with green l...

    Text Solution

    |