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Extraction of zince from zinc blende is ...

Extraction of zince from zinc blende is achieved by

A

Electrolytic reduction

B

Roasting followed by reduction with carbon

C

Roasting followed by reduction with another metal

D

Roasting followed by self reduction

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AAKASH INSTITUTE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Objective type Questions (One option is correct)
  1. Sulphide ores of metals are usually concentrated by both floatation pr...

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  2. Heating pyrities in air to remove sulphur is called

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  3. Extraction of zince from zinc blende is achieved by

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  4. Extraction of copper from copper pyrites is achieved by

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  5. Which of the following metals is purified by distillation process ?

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  6. The method of zone refining is based on the priniciple of

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  7. Which of the following is not a method of purification of metals ?

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  8. Zone refining is used as a method of purification of metals which are

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  9. Which of the following is not a use of aluminimum ?

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  10. Which of the following is not a use of zinc ?

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  11. Wrought iron is used for making

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  12. Which of the following metal can be reduced by carbon reduction as wel...

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  13. Purest form of iron is

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  14. The metal oxide which cannot be reduced to metal by carbon is

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  15. On heating a mixture of Cu(2)O and Cu(2)S, we get

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  16. Out of following which metal can be purified by Van Arkel method ?

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  17. Froth floatation process is based on

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  18. Ag(2)S+NaCNto(A), (A)+Znto(B)+Ag (A) and (B) are respectively

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  19. Choose the false statement

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  20. In zone refining methods, the molten zone -

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