Home
Class 12
CHEMISTRY
From the following flowsheet for the ext...

From the following flowsheet for the extraction of pure metal, answer the given questions.

(v) Reduction of oxides to elements with carbon generally takes place at high temperature, hence `Al` is used in aluminothermite process. It is because :

A

`Al` is more electropositive than the other metals (to be formed by reduction).

B

`Al` has maximum affinity for oxygen.

C

Reduction is highly exothermic, and the heat liberated makes the process spontaneous.

D

Reduction is highly endothermic, and the heat absorbedmakes the process spontaneous.

Text Solution

Verified by Experts

The correct Answer is:
A, C
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exs 1.1 (Subjective)|25 Videos
  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exs 1.1 (Objective)|14 Videos
  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives (Subjective)|14 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Archieves Subjective|35 Videos
  • GRIGNARD REAGENTS AND ORGANOMETALLIC REAGENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises Archives (Linked Comprehension)|1 Videos

Similar Questions

Explore conceptually related problems

From the following flowsheet for the extraction of pure metal, answer the given questions. (i) Step A is :

From the following flowsheet for the extraction of pure metal, answer the given questions. (ii) Step B (reduction) can be carried out ny using :

From the following flowsheet for the extraction of pure metal, answer the given questions. (iii) Impure Cu metal is also obtained :

From the following flowsheet for the extraction of pure metal, answer the given questions. (vi) following reaction is not involved intermite process :

From the following flowsheet for the extraction of pure metal, answer the given questions. (iv) Some of the following metals are obtained by electrolysis of their fused salts : Al, Na, Cu, Ag, Mg, Ca . These metals are :

Look at the given figure and answer the following questions: What change in temperature is seen when this change takes place?

In the stages involved in the extraction of metals in general - give reasons for following Reduction of metallic oxides to metal in the extraction of metals from the ores - is based on the position of the metal in the activity series.

Isotherms of carbon dioxide at various temperatures are represented in figure. Answer the following questions based on this figure. Will condensation take place when the temperature is T_(3) ?

Highly electropositive metal(s) can not be commercially extracted by carbon reduction process at high temperature because these :

Account for the following facts: (a) The reduction of a metal oxide is easier if the metal formed is in the liquid state at the temperature of reduction. (b) Limestone is used in the manufacture of pig iron from haematite. (c) Pine oil is used in the froth flotation process used to concentrate sulphide ores.

CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Solved Example
  1. From the following flowsheet for the extraction of pure metal, answer ...

    Text Solution

    |

  2. From the following flowsheet for the extraction of pure metal, answer ...

    Text Solution

    |

  3. From the following flowsheet for the extraction of pure metal, answer ...

    Text Solution

    |

  4. From the following flowsheet for the extraction of pure metal, answer ...

    Text Solution

    |

  5. From the following flowsheet for the extraction of pure metal, answer ...

    Text Solution

    |

  6. From the following flowsheet for the extraction of pure metal, answer ...

    Text Solution

    |

  7. The Ellingham diagram for a number of metallic sulphides is reproduced...

    Text Solution

    |

  8. The Ellingham diagram for a number of metallic sulphides is reproduced...

    Text Solution

    |

  9. The Ellingham diagram for a number of metallic sulphides is reproduced...

    Text Solution

    |

  10. Questions given below are based on the given diagram for extractive me...

    Text Solution

    |

  11. Free enegry , G = H - TS, is state function that indicates whther a re...

    Text Solution

    |

  12. Questions given below are based on the given diagram for extractive me...

    Text Solution

    |

  13. Questions given below are based on the given diagram for extractive me...

    Text Solution

    |

  14. Questions given below are based on the given diagram for extractive me...

    Text Solution

    |

  15. At high temperature, carbon reacts with water to produce a mixture of ...

    Text Solution

    |

  16. A overset("Calcination")rarr CaO + MgO + underset("Colourless gas")((B...

    Text Solution

    |

  17. A overset("Calcination")rarr CaO + MgO + underset("Colourless gas")((B...

    Text Solution

    |

  18. A overset("Calcination")rarr CaO + MgO + underset("Colourless gas")((B...

    Text Solution

    |

  19. A overset("Calcination")rarr CaO + MgO + underset("Colourless gas")((B...

    Text Solution

    |

  20. A overset("Calcination")rarr CaO + MgO + underset("Colourless gas")((B...

    Text Solution

    |