Home
Class 12
CHEMISTRY
(A) Mg metal is not used for reduction o...

(A) Mg metal is not used for reduction of `Al_(2) O_(3)` thermodynamically
(R) The process will be uneconomical

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise PROBLEMS|38 Videos

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE-2 ( SHORT ANSWER QUESTIONS )|8 Videos

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise Objective Exercise-3 (Previous NEET/AIPMT Questions)|14 Videos

  • PRACTICAL CHEMISTRY

    AAKASH SERIES|Exercise PRACTICE SHEET-5 (Integer answer Type questions)|6 Videos

  • PROTEINS AND NUCLEIC ACIDS

    AAKASH SERIES|Exercise PRACTICE SHEET - 4|30 Videos

Similar Questions

Explore conceptually related problems

Carbon cannot be used in the reduction of Al_2 O_3 because

The Nature of Al_2 O_3 is

The chief product of electrolysis of Al_(2)O_(3) at the anode in the Hall's process is

The metal obtained by self reduction process is

A mixture of Al_(2) O_(3) and Fe_(2) O_(3) can be separa-ted by using

Explain the action of Al_(2)O_(3) on ethyl alcohol at 260^(@) C and 350^(@)C .

Although thermodynamically feasible, in practice , magnesium metal is not used for the reduction of alumina in the metallurgy of aluminium .Why?

Although thermodynamically feasible , in practice , magnesium metal is not used for the reduction of alumina in the metallurgy of aluminium . Why

AAKASH SERIES-PRINCIPLES OF METALLURGY-Objective exercise -4 (Assertion (A) & Reason (R) type questions :
  1. (A) Aluminium metal can be extracted by the electrolysis of aqueous al...

    Text Solution

    |

  2. (A) Magnesium can not be extracted by electrolysis of aqueous salt s...

    Text Solution

    |

  3. (A) Iron metal is refined in blast furnace (R) Blast furnace is used...

    Text Solution

    |

  4. (A) Van Arkel method is a vapour phase refining process (R) Vapours...

    Text Solution

    |

  5. (A) For iron extraction usually Fe(2) O(3) is used but not FeS(2) ...

    Text Solution

    |

  6. (A) In the case of an ore contaning ZnS and PbS, the one depresant lik...

    Text Solution

    |

  7. (A) In Froth floatation proess collectors like pine oil is added (R)...

    Text Solution

    |

  8. (A) During leaching of Al from bauxite seeding agent freshly prepare...

    Text Solution

    |

  9. (A) The thermodynamical reaction proceeds forward if Delta G is negat...

    Text Solution

    |

  10. (A) Mg metal is not used for reduction of Al(2) O(3) thermodynamically...

    Text Solution

    |

  11. (A) The reduction of metal oxide is easier if the metal is in liquid s...

    Text Solution

    |

  12. (A) At all conditions Mg can reduce Al(2) O(3) (R) Below 135^(@)C M...

    Text Solution

    |

  13. (A) In metallurgy of Al , the electrolyte is bauxite mixed with cryoli...

    Text Solution

    |

  14. (A) The reduction of leached copper ore will be advisable with Iron ...

    Text Solution

    |

  15. (A) H(2) is good reducing agent but not widely used in metallurgical ...

    Text Solution

    |

  16. (A) In metallurgy of Ag, Zn replaces Ag from comples Na[Ag(CN)(2)] ...

    Text Solution

    |

  17. (A) The reduction of Cr(2) O(3) with Al posses Delta G^(0) = - ve but...

    Text Solution

    |

  18. (A) In extraction of Al, Al(2) O(3) is concentrated by leaching (R)...

    Text Solution

    |

  19. (A) Ores like haematite, Iron pyrites can be concentrated by magnetic ...

    Text Solution

    |

  20. (A) Alumina is leached from bauxite using caustic soda (R) Leaching...

    Text Solution

    |