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If C and D are two events such that Csub...

If C and D are two events such that `CsubD""a n d""P(D)!=0` , then the correct statement among the following is :

A

Hydrogen is used to reduce NiO

B

Zirconium is refined by Van Arkel method

C

The sulphide ore galena is concentrated by froth floatation process

D

In the metallurgy of iron, the flux used is `SiO_2`

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Delta G^@ vs T plot in the Ellingham's diagram slopes downward for the...

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  2. Identify the reaction that does not take place in a blast furnace :

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  3. If C and D are two events such that CsubD""a n d""P(D)!=0 , then the c...

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  4. In aluminothermic process, Al is used as

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  5. State the role of silica in the metallurgy of copper.

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

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

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  8. formula of copper sulphate

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

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

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

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

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  13. The statement that is not correct is

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

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

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

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  17. In the extraction of chlorine from brine .

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

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

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

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