Home
Class 12
CHEMISTRY
In order to refine blister copper it is ...

In order to refine blister copper it is melted in a furnance and is strirred with gree longs of woman the purpose is

A

To expel the dissolved gases in the blister

B

To bring the impurities to surface and oxidise them

C

To increase the cabon content of copper

D

To reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE-1 ( SHORT ANSWER QUESTIONS )|4 Videos

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE-2 (LONG ANSWER QUESTIONS )|7 Videos

  • PRINCIPLES OF METALLURGY

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE-2|45 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

Which of the following statements are correct related to metallurgy? (A) In electrolytic refining of copper, pure Cu is used as anode. (B) Zone refining is based on the principle that impurities are more soluble in the melt than in the solid state of the metal. (C) (C) TiI_4 upon heating will give pure Ti. (D) Very pure Zr may be obtained by galvanisation (E) In copper smelting, hot air is used to convert to CuSO_4 The correct answer is

In electrolytic fefining of cooper, pure Cu os used as anode. (B) Zone refining is based on the principle that impurities are more solutble in the melt than in the solid states of the metal. (D) Very pure Zr may be obtained by Galvanisation. (E) In copper smelting hot air is used to convery Cu_(2) S to CuSO_(4).

Read the passage and answer the following. The prevention of pregnancy in woman by preventing ferilisation is called contraception.Any device or chemical which prevents pregnancy is called a contraceptive.Physical device like condoms in males diaphragm (cap) for woman are used.Pills for male and female are available which prevent pregnancy.Intra uterine device called copper-t,loopetc., also very effective in preventing pregnancy.Surgical method of birth control for males and females are vasectomy and tubectomy. What is the purpose of contraception?

Match the following {:("List-I ","List-II "),("A) Zone refining ","I) Indium "),("B) Poling ","II) Titanium "),("C) Van-Arkel method ","III) Nickel "),("D) Mond process ","IV) Blister copper "),(,"V) Zinc "):} The correct answer is

AAKASH SERIES-PRINCIPLES OF METALLURGY-PRACTICE EXERCISE
  1. Chemical composition of malachite is 'X'. Then the composition of azur...

    Text Solution

    |

  2. In sulphatizing roasting of Zns, products are

    Text Solution

    |

  3. In order to refine blister copper it is melted in a furnance and is st...

    Text Solution

    |

  4. Which of the following process is used for concentration of ores and f...

    Text Solution

    |

  5. The chemical composition of slag formed during smelting process in the...

    Text Solution

    |

  6. Impurities in the zinc spelter are

    Text Solution

    |

  7. Role of limestone used in re extraction

    Text Solution

    |

  8. The purest form of commercial iron is

    Text Solution

    |

  9. Percent purity of iron in cast iron is

    Text Solution

    |

  10. Native silver metal forms a water soluble complex with a dilute aqueou...

    Text Solution

    |

  11. Which of the following metals can be used for precipitation of silver ...

    Text Solution

    |

  12. In the Down's process at low temperature sodium extracted is more beca...

    Text Solution

    |

  13. Aqueous sodium cyanide is used as a reagent in the metal extraction. T...

    Text Solution

    |

  14. Metal is precipitated from Au(CN)(4)^(3-) using zinc as a precipitant....

    Text Solution

    |

  15. The best electrolyte for the extraction of magnesium metal is

    Text Solution

    |

  16. Which one of the following is the mineral for tin?

    Text Solution

    |

  17. Some statements about the below Ellingham diagram are given below ...

    Text Solution

    |

  18. Carbon cannot be used in the reduction of Al2 O3 because

    Text Solution

    |

  19. Spinels are denoted with the formula MAl2 O4, where 'M' is

    Text Solution

    |

  20. Magnesium present in the sea water is precipitated using 'X' and preci...

    Text Solution

    |