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In the froth floatation process, zinc su...

In the froth floatation process, zinc sulphide and lead sulphide can be separated by ……….

A

using collectors

B

adjusting the proportion of oil to water

C

using depressant

D

using froth stabilisers

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ALLEN-METALLURGY-EXERCISE -04
  1. In the extraction of aluminium by Hall-heroult Process, purified Al(2)...

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  2. Which of the following statements is correct about the role of collect...

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  3. In the froth floatation process, zinc sulphide and lead sulphide can b...

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  4. Common impurities present in bauxite are …….

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  5. Which of the following ore are concentrated by froth floatation ?

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  6. Which of the following reaction occur during calcination ?

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  7. For the meallurgical process of which of the ores calcined ore can be ...

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  8. The main reaction occuring in blast furnance during extraction of iron...

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  9. In which of the following method of purification, metal is converted t...

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  10. Which of the following statements are correct?

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  11. Extraction of chlorine from brine is based on

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  12. Why is an external emf of more than 2.2 V required for the extracation...

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  13. At temperature above 1073K, coke can be used to reduce FeO to Fe. How ...

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  14. Impurities of sulphur, silicon and phosphorus can be removed from cast...

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

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  16. Write two basic requirements for refining of a metal by Mond's process...

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

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  18. How do we separate two sulphide ores by froth floatation method ? Expl...

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

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

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