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Why lime stone is added in the extractio...

Why lime stone is added in the extraction of lead from galena?

A

It prevents the formation of `PbSO_(4)`

B

It removes the impurity of silica as fusible slag.

C

It converts lead silicate to lead oxide

D

It moves the impurity of iron oxide as fusible slag.

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The correct Answer is:
A, B, C
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NARAYNA-METTALURGY-MULTIPLE ANSWER QUESTOINS
  1. Select the correct statements (s) :

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  2. Which of the following reaction is not involved in thermite process?

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  3. Why lime stone is added in the extraction of lead from galena?

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  4. Amphoteric nature of aluminium is employed in which of the following p...

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  5. The major role of flourspar, CaF(2) which is added in small amount in ...

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  6. Which of the following statement is/are not correct ?

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  7. Bessemerisation is carried out for

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  8. Which of the following statements are correct in connection with the e...

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  9. During the extraction of Ag and using a KCN solution and Zn, cyanide i...

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  10. Which of the following are correctly matched?

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  11. Which of the following statements are correct ?

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  12. Which of the following statement is/are correct?

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  13. Point out the incorrect statement among the following?

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  14. Which of the following process makes direct use of oxygen ?

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  15. In the extraction of chlorine from brine

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  16. Which of the following is/are correctly matched?

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  17. In which of the following pair(s) the minerals are converted in to met...

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  18. The reaction (s) which does (do) not occur in the reduction zone in th...

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  19. Cassiterite ore (SnO(2)) is purified by

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  20. Which of the following statements(s) is (are) true?

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