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Name a method used for removing gangue f...

Name a method used for removing gangue from sulphide ore.

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The method is known as Froth Floatation process.
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DINESH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Questions From Board Examinations
  1. Name two important ores or iron. Write the method of extraction of iro...

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  2. Write the important ores of aluminium and the principle of extraction ...

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  3. Name a method used for removing gangue from sulphide ore.

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  4. How is wrought iron different from steel ?

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  5. Which reducing agent is employed to get copper from the low grade copp...

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  6. Outline the principle behind the refining of metals by chromatographic...

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  7. What is the role of zinc metal in the extraction of silver ?

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  8. Write a short note on leaching with an example.

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  9. How is iron extracted from its ore ? Explain with related chemical rea...

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  10. (i) Indicate the principle behind the method for the refining of nicke...

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  11. (i) Name a method used for the refining of zirconium. (ii) What is t...

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  12. (i) Indicate the principle behind the method used for the refining of ...

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  13. Write the names of the important ores of aluminium. Discuss the princi...

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  14. Write the names of any two ores of silver and give their chemical form...

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  15. Write principle behind the following : (i) Vapour phase refining (...

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  16. (i) What is the role of cryolite in the extraction of aluminium ? (i...

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  17. What is the role of iodine in Van Arkel process ?

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  18. Describe the role of (i) NaCN in the extraction of gold from its ore...

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  19. Explain the magnetic separation of ores.

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  20. What is Calcination ?

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