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

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

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

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  4. The major role of fluorpar (CaF2 ) which added in small quantities in ...

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  5. Which of the following statement(s) is /are correct?

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  6. Which of the following statement(s) is/are correct about slag?

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  7. Which of the following common element(s) is/are present in the anode m...

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  8. Bessemerisation is carried out for

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  9. Select the correct statement.

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

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  11. Which of the following reduction reactions are actually employed in co...

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  12. Froth flotation

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  13. The metals which cannot be obtained by electrolysis of aqueous solutio...

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  14. Which of the following are methods of concentration of minerals

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  15. Roasting is carried out to :

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  16. The correct statement (s) is/are

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  17. Following reaction(s) is/are involved in thermite process :

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

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  19. Amphoteric nature of aluminum is employed in which of the following pr...

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  20. The major role of fluorpar (CaF2 ) which added in small quantities in ...

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