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Common impurities present in bauxite are...

Common impurities present in bauxite are…..

A

CuO

B

ZnO

C

` Fe_2 O _ 3 `

D

` SiO _ 2 `

Text Solution

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The correct Answer is:
C, D
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PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS - II )
  1. Which of the following statements is correct about the role of substan...

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  2. In the Froth Floatation process, zinc sulphide and lead sulphide can b...

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  3. Common impurities present in bauxite are…..

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  4. Which of the following ores are concentrated by froth floatation ?

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  5. Which of the following reaction occur during calcination ?

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  6. For the metallurgical process of which of the ores calcined ore can be...

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  7. The main reactions occuring in blast furnace during extraction of iron...

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  8. In which of the following method of purification metal is converted to...

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  9. Which of the following statements are correct ?

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  10. In the extraction of chlorine from brine

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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 reaction 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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  18. The mixture of compounds A and B is passed through a column of Al(2)O(...

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  19. Why is sulphide ore of copper heated in a furnace afer mixing with sil...

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

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