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During smelting, an additional substance...

During smelting, an additional substance is added which combines with impurities to form a fusible product. The substance added is known as :

A

Slag

B

Mud

C

Gangue

D

Flux

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AAKASH INSTITUTE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Objective type Questions (One option is correct)
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  2. Impure zince, as collected from earthen clay retort, is called

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

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

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  5. Heating pyrities in air to remove sulphur is called

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  6. Extraction of zince from zinc blende is achieved by

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  7. Extraction of copper from copper pyrites is achieved by

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

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

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

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

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

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

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  14. Wrought iron is used for making

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

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  16. Purest form of iron is

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

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

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

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  20. Froth floatation process is based on

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