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In order to refine "copper" it is melted...

In order to refine "copper" it is melted in a furnace and it is stirred with green logs of wood. The purpose is :-

A

to expel the dissolved gases in blister copper

B

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

C

to bring the impurities to surface and oxidise them

D

to increase the carbon content in copper

Text Solution

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The correct Answer is:
B
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Blister copper is refined by stirring molte impure metal with green logs of wood because such a wood liberates hydrogen gases (like CH_(4)) . This process X is called…..and the metal contains impurities of Y is…

Blister copper is refined by stirring molten impure metal with green logs of wood because such a wood liberates hydrocarbon gases (like CH_4 ). This process X is called ________ and the metal contains impurities of Y is __________ .

Mark the correct statements. (i) Mercury can be refined by the process of distillation. (ii) In poling, the molten impure metal is stirred with green poles of wood. (iii) In electrolytic refining of metals , impure metal is made as cathode and a thin strip of pure metal is made as anode.

Blister copper is refined by stirring moltem impure metal with green logs of wood because such a wood liberated hydrocarbon gases like (CH_(4)) . The process X is called _____ and the Metal contains impurity of Y is ____:

Knowledge Check

  • In order to refine blister copper it is melted in a furnace and is stirred with green logs of wood. The purpose is

    A
    to increase the carbon content of copper.
    B
    to bring the impurities to surface and oxidize them.
    C
    to reduce the metallic oxide impurities with hydrocarbon gasses liberated from the wood.
    D
    to expel the dissolved gases in blister copper.

  • In order to refine "blister copper' it is melted in a furnace and is stirred with green logs of wood. The purpose is _______

    A
    to expel the dissolved gases in blister copper
    B
    to bring the impurities to surface and oxidize them
    C
    to inrease the carbon content of copper
    D
    to reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood

  • In order to refine blister copper , it melts in a furnance and is stirred with green logs of wood . The purpose is

    A
    to expel the dissoved gases in blister copper
    B
    to bring the impurities to surface and oxidise them
    C
    to increase the carbon content of copper
    D
    to reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood
    • ALLEN-INORGANIC CHEMISTRY-METALLURGY
    1. In order to refine "copper" it is melted in a furnace and it is stirre...

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    2. The process which involves the treatment of the ore with a suitable re...

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    3. Select correct matching :-

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    4. Read the following statements :- (I) Al has greater affinity than t...

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    5. Which of the following is incorrect ?

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    6. Which of the reactions occurs in slag formation zone in blast furnace ...

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    7. Which of the following diagram is correctly related to the extraction ...

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    8. Select the flow diagram which is correct for extraction of particular ...

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    9. Both copper carbonate and copper hydroxide are present in :-

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    10. Ag(2)S +underset("Excess")(KCN) to [Ag(CN)(x)]^(-n) [Ag (CN)(x)]^(-n...

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    11. When ZnS and PbS minerals are present together, Then NaCN added to sep...

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    12. Which of the following statement is not correct regarding calcination ...

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    13. "Ore" overset("Calcination")to "Residue" overset("dil.HNO"(3))tounders...

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    14. Which of the following is not correctly matched :-

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    15. The method of zone refining of metals is based on the principle of :-

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    16. The reduction of an oxide by aluminium is called :-

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    17. Which of the following sulphide ore is not concentrated by froth-float...

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    18. Which of the following statements is correct regarding the slag format...

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    19. Which of the following factors is of no significance for roasting sulp...

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