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How many methods are there to purify a m...

How many methods are there to purify a metal ?

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BEYOND PUBLICATION-PRINCIPLES OF METALLURGY-EXERCISE
  1. Is there any other name for purification of impure metal ?

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  2. On which factors the purification of a metal depends ?

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  3. How many methods are there to purify a metal ?

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  4. When do distillation process is useful ?

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  5. In electrolytic refining, where do the impure metal is kept ?

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  6. Which things are added to the ore in smelting ?

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  7. What is the effect of heat that produced in smelting process ?

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  8. How do the impurities change during smelting ?

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  9. How do the ore get heated in smelting process ?

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  10. What is role of flux in removing impurities ?

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  11. Write two sentences about the reactivity of 'Pb'.

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  12. There is metal which has low boiling point. To refine it which process...

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  13. Pure iron is available to you. If you want to make buckets and cooking...

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  14. Sowmya says 'molten products are obtained in blast furnace'. But Radha...

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  15. The displacement reactions involving high reactive metals are highly

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  16. is the method the required metal gets deposited at the cathode.

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  17. …………chemical process involves heat.

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  18. furnace has both furnace and hearth separated.

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  19. If the impurity (gangue) is acidic substance, then the flux used is

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  20. Correct statement among the following :

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