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Which of the following processes involve...

Which of the following processes involves smelting process ?

A

`ZnCO_3 rarr ZnO +CO_2`

B

`Fe_2O_3 +3CO rarr 2Fe+3CO`-2

C

`2PbS+3O_2 rarr 2PbO +2O_2`

D

`Al_2 O_3 .2H_2O rarr Al_2O_3 + 2H_2O`

Text Solution

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The correct Answer is:
B
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice Questions - Level - II
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  2. An ore after levigation is found to contain basic impurities . Then fl...

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  3. Which of the following processes involves smelting process ?

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  4. Van Arkel method of purification of metals involves converting the met...

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  5. Roasting is generally done in case of :

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  6. The following equation depicts a method of purification of nickel by :...

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  7. The smelting of iron in a blast furnace involves all the steps except ...

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  8. Heating of pyrites in air to remove sulphur is called :

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  9. Which of the following is purified by zone refining ?

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  10. In metallurgy , flux is a substance used to convert :

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  11. Which of the following metals is obtained by self reduction process ?

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  12. Thomas slag is :

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  13. In aluminothermic process aluminium acts as :

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  14. Smelting is the process of reduction of metal oxide by :

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  15. Which of the following ores cannot be concentrated by froth floatation...

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  16. Electrolytic reduction method is used for :

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  17. Which of the following contains both Ca and Mg ?

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  18. Which of the following metals does not occur as oxide ?

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  19. Calcinations is carried out in a :

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  20. A metal obtained by hydrometallurgy is :

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