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An ore of galena (PbS) is contaminated w...

An ore of galena (PbS) is contaminated with Zinc blende (ZnS). Name one chemical which can be used to concentrate galena selectively by froth floatation process.

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SHARAM PUBLICATION-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-EXERCISE
  1. Why do some metals occur in the native state ?

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  2. What is the role of stabilizer in froth floatation process ?

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  3. An ore of galena (PbS) is contaminated with Zinc blende (ZnS). Name on...

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  4. Which types of ores are roasted ?

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  5. Name the method used for the refining of copper metal.

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  6. Why sulphide ores are concentred by froth floatation process.

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  7. Which process is used for refining of metals which are used as Semicon...

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  8. What is formed when a flux reacts with a gangue material?

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  9. Name three important ores of iron .

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  10. Between CO and C , which is better reducing agent at 983 k

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  11. Fill in the blank and rewrite the whole statement. Two metals which ...

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  12. Fill in the blank and rewrite the whole statement. A non-metal which...

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  13. Fill in the blanks : During electro refining of copper ……….. And …………....

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  14. Fill in the blanks : …………. Is used as reducing agent during smelting.

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  15. Fill in the blanks : Froth floatation process is the suitable method o...

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  16. Fill in the blanks : A homogeneous mixture of a metal with mercury is ...

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  17. Fill in the blanks : Flux combines with infusible impurities to form …...

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  18. Fill in the blanks : …………… acts as acidic flux while ………. Acts as a ba...

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  19. Minerals, from which metal can be extracted economically, are called …...

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  20. Fill in the blanks : The most abundant metal in the earth's crust is …...

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