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Which of the following statement(s) is /...

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

A

Magnestic is the ore of magnesium

B

A mineral containing ZnS and PbS together is separated in fronth floatation process by adding NaCN as depressant.

C

Which bauxite is purified by Hall's process.

D

Extraction of zinc from zinc blende is possible by self reduction.

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The correct Answer is:
A, B
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NARAYNA-METTALURGY-MULTIPLE ANSWER QUESTOINS
  1. Why lime stone is added in the extraction of lead from galena ?

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

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

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

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

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  6. Bessemerisation is carried out for

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  7. Select the correct statement.

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

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

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  10. Froth flotation

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

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

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  13. Roasting is carried out to :

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  14. The correct statement (s) is/are

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

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

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

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

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

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  20. Bessemerisation is carried out for

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