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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 pyrites

D

Magnetite

Text Solution

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The correct Answer is:
B, C
(b,c) Haematite `(Fe_(2)O_(3))` and magnetite `(Fe_(3)O_(4))` are oxide ores while galena (PbS) and copper pyrites `(CuFeS_(2))` are sulphide ores. As we know sulphide ores are extracted by using froth floatation method. Hence (b) and ( c) are the correct choices.
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NCERT EXEMPLAR-GENERAL PRINCIPLE AND PROCESSES OF ISOLATION OF ELEMENTS -General Principle And Processes Of Isolation Of Elements
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  3. Which of the following ores are concentarted by froth floatation?

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  8. Which of the following statements are correct ?

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  9. In the extraction of chlorine from brine

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  10. Why is an external emf of more than 2.2V required for the extraction o...

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  11. At temperature above 1073K coke can be used to reduce FeO to Fe. How c...

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  12. Wrought iron is the purest form of iron. Write a reation used for the ...

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  13. How is copper extracted from low grade copper ores?

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  14. Write two basic requirements for refining of a metal by Mond process a...

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  15. Although carbon and hydrogen are better reducing agents but they are n...

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  16. How do we separate two sulphide ores by Froth Floatation Method? Expla...

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  17. The purest form of iron is prepared by oxidising impurities from cast ...

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  20. Why are sulphide ores converted to oxide before reduction?

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