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furnace has both furnace and hearth sepa...

________furnace has both furnace and hearth separated.

A

Blast

B

Reverbertory

C

Open hearth

D

None

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BEYOND PUBLICATION-PRINCIPLES OF METALLURGY-EXERCISE
  1. is the method the required metal gets deposited at the cathode.

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  2. …………chemical process involves heat.

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  3. furnace has both furnace and hearth separated.

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

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  5. Correct statement among the following :

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  6. Extract Na from NaCl, we obtain Na at

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  7. Which of the following slag is formed between CaO and SiO2?

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  8. Which of the following matching is wrong ?

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

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  10. Chemically rust is a

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  11. More the H+ ion concentration increases the rate of rusting due to

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  12. Which of the following is the correct order of activities series ?

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

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  14. In the froth floatation process ore particles are come along with the ...

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  15. Which of the following metal is not available in native state ?

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  16. Which method is most suitable to enrich the sulphide ores ?

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  17. Which of the following reagent is used in the extraction of Aluminium ...

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  18. Why do gold and silver found in free state in nature ?

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  19. Which metals found iin combined state in nature ? Why ?

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  20. What happens when crushed particles are washed ?

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