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Give one example each of a collector and...

Give one example each of a collector and a froth stabiliser used in froth-floatation.

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CHHAYA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE (VERY SHORT ANSWER-TYPE QUESTIONS)
  1. Give one example each of a collector and a froth stabiliser used in fr...

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  2. What do you mean by 'seeding' in Bayer's process ?

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  3. What is thermite welding?

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  4. Write the composition of charge used in the extraction of iron.

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  5. Name the ore of aluminimum that is generally used for its extraction.

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  6. What are 'tough pitch' and 'spelter'?

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  7. Name two metals which are available in the free state in nature.

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  8. Give an example of a mineral which is not an ore.

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  9. What is white bauxite and red bauxite?

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  10. Name the metals that are usually extracted by electrolytic reduction. ...

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  11. Name the reducing agent that is used in the thermite process?

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  12. Why does roasting of cinnabar HgS, produce the metal, mercury, rather ...

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  13. Name the method of purification that produces metals of very high puri...

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  14. Name the method used to obtain pure copper from blister copper?

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  15. What is '18-8' steel?

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  16. How is carbon found to be present in wrought iron?

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  17. What is cupellation?

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  18. Name two sulphide ores which can be separated by froth-floatation.

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  19. Give an example each of an acidic and a basic flux.

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  20. How can a small amount of cadmium be removed from zinc?

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