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Alkali metals are generally extracted by...

Alkali metals are generally extracted by electrolysis of their ores.

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A: Highly electropositive metals are extracted by electrolysis of their fused salts. R: Highly electropositive metals cannot be reduced by chemical reduction methods.

Which metals are generally extracted by the electrolytic processes ? What positions these metals generally occupy in the periodic table?

Which metals are generally extracted by the electrolytic process ? What positions these metals generally occupy in the periodic table?

The metal extracted by electrolysis of its fused salt is

Alkali metals are obtained by the electrolysis of the molten salts and not by the electrolysis of their aqueous solutions. Give reason.

Sodium metal is extracted by the electrolysis of

Alkali metals cannot be extracted by reduction of their oxides and other compounds because

Calcium is extracted by the electrolysis of :

Assertion: Alkali metals are obtained by electrolysis of molten salt and not aqueous solution. Reason: The discharge potential of H^(+) ions is lower than alkali metals cation hence hydrogen is dicharged at cathode instead of metal.

From the following flowsheet for the extraction of pure metal, answer the given questions. (iv) Some of the following metals are obtained by electrolysis of their fused salts : Al, Na, Cu, Ag, Mg, Ca . These metals are :

CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (True/False)
  1. Smelting is the process of heating the ore with magnesium.

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  2. Alkali metals are generally extracted by electrolysis of their ores.

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  3. Levigation is generally employed for concentration of sulphide ores.

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  4. Every mineral is an ore, but every ore is not a mineral.

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  5. Slag is a product formed during smelting by combination of flux and im...

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  6. Alkali metals can be obtained by chemical reduction of their compounds...

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  7. Sylvine is an ore of potassium.

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  8. Oxide ore are purified by levigation process.

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  9. During electrorefining of a metal, impure metal is made anode.

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  10. Highly pure metal can be obtained by zone refining

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  11. Aluminium is the most abundant metal in the earth's crust.

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  12. Reactive metals occur in native state.

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  13. The process of calcination and roasting is carried out in reverberator...

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  14. In calcination, ore is heated strongly in the absence of air

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  15. Copper is found both in free as well as in combined state in nature.

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  16. Below 1623 K, Al can reduce MgO to Mg, but above 1623 K, reverse is tr...

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  17. Mond's process is used for purification of titanium.

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  18. KCN forms soluble complex with silver glance.

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  19. Zinc blende on roasting often gives Zn metal.

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  20. Silver is extracted by hydrometallurgy.

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