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Method of extraction of metal from purif...

Method of extraction of metal from purified ore depends on

A

`1`. availability of metal

B

`2`. physical state of the metal

C

`3`. reactivity of the metal

D

`4`. cost of the metal.

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
  1. Which of the following slag is formed between CaO and SiO2?

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  2. Which of the pairs of ores are carbonate ores ?

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  3. Method of extraction of metal from purified ore depends on

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  4. More active metals are not obtained from their ores by simple reductio...

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  5. ‘Na' metal is prepared from fused NaCl by

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  6. Which combination is wrong for the extraction of sodium metal from fus...

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  7. Which of the following step is not involved in the extraction of Ag ?

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  8. Which of the following impurities are present in a metal after reducti...

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  9. The selection of process of purification of a metal depends on:

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  10. Liquation is used for purification of metal if:

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  11. Chemically rust is a

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  12. When an Iron object is painted, the process of corrosion is reduced du...

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  13. The furnaces in which there is no direct contact between the hearth an...

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  14. Active metals are not extracted by the electrolysis or aqueous electro...

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  15. Which of the following is wrong?

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  16. Which of the following is correct about calcination ?

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  17. Which of the following is true about preparation of Iron by smelting p...

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  18. Which of the following is true about the electrolytic refining of meta...

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  19. Aluminium is more reactive than Iron, but rate of corrosion in Iron is...

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  20. Which of the following method is used for purification of metals conta...

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