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Which method is used for refining Zr and...

Which method is used for refining `Zr` and `Ti`? Explain with equation.

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Zr and Ti are refined by van Arkel method. It involves 2 steps.
(a) Formation of iodide e.g., zirconium
`Zr+2I_(2) to ZrI_(4)`
(b) Decomposition of iodide
`ZrI_(4) overset(1800 K) to underset("Pure")(Zr) +2I_(2)`
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NCERT EXEMPLAR-GENERAL PRINCIPLE AND PROCESSES OF ISOLATION OF ELEMENTS -General Principle And Processes Of Isolation Of Elements
  1. Why is sulphide ore of copper heated in a furnace afer mixing with sil...

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

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  3. Which method is used for refining Zr and Ti? Explain with equation.

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  4. What should be the considerations during the extraction of metals by e...

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  5. What is the role of flux in metallurgical processes?

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  6. How are metals used as semiconductor refined? What is the principle of...

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  7. Write down the reactions taking place in Bast furnace related to the m...

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  8. Give two requirements for vapour phase refining.

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  9. Write the chemical reaction involved in the extraction of gold by cyan...

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  10. Match the items of Column I with item of Column II and assign the corr...

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  11. Match the items of Column I with item of Column II and assign the corr...

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  12. Match the items of Column I with item of Column II and assign the corr...

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  13. Match the items of Column I with item of Column II and assign the corr...

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  14. Match the items of Column I with item of Column II and assign the corr...

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  15. Assertion : Nickel can be purified by Mond process. Reason : Ni(CO)(...

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  16. Assertion : Zirconium can be purificed by Van Arkel method. Reason :...

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  17. Assertion : Sulphide ores are concentrated by Froth Floatation method....

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  18. Assertion : Zone refining method is very useful for producing semicond...

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  19. Assertion : Hydrometallurgy involves dissolving the ore in a suitable ...

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  20. Explain the following (a) CO(2) is a better reducing agent below 7...

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