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Smelting is the process of heating the o...

Smelting is the process of heating the ore with magnesium.

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Smelting is the extraction of a metal from its oxide ore by a process involving melting.
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CENGAGE CHEMISTRY-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 galance.

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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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