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Define : (a) Hydrometallurgy (b) Elect...

Define : (a) Hydrometallurgy
(b) Electrometallurgy.

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(a) Hydrometallurgy : The process of extraction of metal by dissolving the ore in suitable reagent followed by precipitation or displacement of metal by more electropositive metal is known as hydrometallurgy.
(b) Electrometallurgy : The process of extraction of metal by electrolysis of their fused salt is known as electrometallurgy. This method is used for the extraction of highly reactive metal like Na, Ca, Al etc.
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GURUKUL PUBLICATION - MAHARASHTRA PREVIOUS YEAR PAPERS- OCTOBER 2015-Section - II
  1. Define : (a) Hydrometallurgy (b) Electrometallurgy.

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  2. Select and write the most appropriate answer from the given alternativ...

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  3. Select and write the most appropriate answer from the given alternativ...

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  4. Select and write the most appropriate answer from the given alternativ...

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  5. Select and write the most appropriate answer from the given alternativ...

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  6. Select and write the most appropriate answer from the given alternativ...

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  7. Select and write the most appropriate answer from the given alternativ...

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  8. Select and write the most appropriate answer from the given alternativ...

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  9. Identify 'A' and 'B' in the following reaction : CH(3)-CH=CH(2) over...

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  10. Lanthanoids and actinoids.

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  11. How are the following compounds prepared ? (a) Benzyl alcohol from b...

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  12. What is the action of acetic anhydride on : (a) Ethyl amine ? (b) ...

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  13. What are monosaccharides ? Draw ring structure of alpha-D-(+)-glucopyr...

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  14. Define the following: (a) Cationic detergents ltBrgt (b) Broad spect...

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  15. What is Stephen reaction ?

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  16. Explain sidgwick's electronic theory with suitable example.

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  17. What is the action of nitrous acid on : (a) Primary nitroalkane (b...

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  18. What is peptide linkage? How is tripeptide formed?

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  19. Write the reactions involved in the preparation of : (a) Teflon (b) ...

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  20. What is the position of iron (Z=26) in periodic table?

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  21. Discuss the mechanism of alkaline hydrolysisi of bromomethane. How i...

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