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According to Ellingham diagram, the oxid...

According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature ?

A

`Al_2O_3`

B

`Cu_2O`

C

MgO

D

ZnO

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. State the role of silica in the metallurgy of copper.

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  2. In the electrolytic refining of zinc, ............

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  3. According to Ellingham diagram, the oxidation reaction of carbon to c...

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  4. formula of copper sulphate

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  5. From the Ellingham graphs on carbon, which of the following statements...

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  6. The function of potassium ethyl xanthate in froth floatation process i...

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  7. Magnetic separation is used in the concentration of: Copper pyrites, C...

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  8. When limestone is heated, CO2 is given off. The metallurgical operatio...

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  9. The statement that is not correct is

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  10. Match the metal in Column I with the ores in Column II

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  11. Match the extraction process in Column I with the metal in Column II.

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  12. Match the species given in Column I that are present in the ore(s) giv...

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  13. In the extraction of chlorine from brine .

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  14. When copper ore is mixed with silica, in a reverberatory furnace coppe...

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  15. Which of the following reactions is an example of auto reduction ?

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  16. A number of elements are available in earth’s crust but most abundant ...

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  17. Zone refining is based on the principle that .

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  18. In the extraction of copper from its sulphide ore, the metal is formed...

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  19. During the electrolysis of NaCl solution, the gas liberated at the ano...

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  20. An ore of aluminium is

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