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Poiling process is used for:...

Poiling process is used for:

A

Meetal sulphides

B

Metal carbonates

C

Metal bicarbonates

D

Metal oxides

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AAKASH INSTITUTE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Objective type Questions (One option is correct)
  1. Zinc is extracted from zinc oxide by its reaction with coke in

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  2. Which of the following metal is leached by Cyanide process

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  3. Poiling process is used for:

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  4. Impure zince, as collected from earthen clay retort, is called

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  5. During smelting, an additional substance is added which combines with ...

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  6. Sulphide ores of metals are usually concentrated by both floatation pr...

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  7. Heating pyrities in air to remove sulphur is called

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  8. Extraction of zince from zinc blende is achieved by

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  9. Extraction of copper from copper pyrites is achieved by

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

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

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

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

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

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

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  16. Wrought iron is used for making

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

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  18. Purest form of iron is

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

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

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