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Which of the following ores are concenta...

Which of the following ores are concentarted by froth floatation?

A

haematite

B

galena

C

copper pyrite

D

azurite

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The correct Answer is:
B, C
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MOTION-METALLURGY-EXERCISE 2 (LEVEL - II)
  1. Which of the following reduction reactions are actually employed in co...

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  2. Which of the following cannot be obtained by electrolytic reduction of...

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  3. Which of the following ores are concentarted by froth floatation?

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  4. Which of the following statement(s) is/are common between roasting and...

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  5. Which of the following reaction(s) occurs during calcination?

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  6. Roasting can be performed in:

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  7. Which of the following is(are) sulphide ores?

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  8. Which of the following is(are) regarded as iron ores?

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  9. Which of the following employ downward movement or ore due to gravity?

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  10. Calcium silicate slag formed in extraction of iron

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

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  12. Noble metal(s) which are commerically extracted by cyanide process is(...

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  13. Carbon reduction method is commercially employed for commercial extrac...

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  14. The main reaction occuring in blast furnace during the extraction of i...

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  15. Which of the following are true for electrolytic extraction of alumini...

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  16. During extraction of copper, it is obtained in the form of molten matt...

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  17. Which of the following ores is(are) concentrated industrially by froth...

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  18. Which of the following is true for calcination of a metal ore ?

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  19. The majore role of flurospar (CaF(2)) which is added in small quantiti...

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  20. The difference (s) between roasting and calcination is / are :

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