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The reduction of a metal oxide is easier...

The reduction of a metal oxide is easier if the metal is formed in the __________ state at the temperature of reduction.

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CHHAYA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE (Fill in the blanks )
  1. The ore of tin containing FeCrO(4) is concentrated by .

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  2. Name the reducing agent that is used in the thermite process?

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  3. is used as a flux to remove SiO(2) (gangue).

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  4. The most pure iron is .

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  5. The highly electropositive metals like Na, Mg or Al are extracted by .

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  6. electrode is used as anode in the electrolysis of Al(2)O(3).

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  7. Low melting metals like lead and tin are purified by .

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  8. is used in purification of nickel by Mond process.

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  9. The slag obtained from blast furnace mainly contains .

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  10. Mg reduces Al(2)O(3) below .

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  11. Metals of very high purity are produced by method.

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  12. The metals used in space technology are purified by method.

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  13. Froth-floatation is used for concenrating ores.

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  14. solution is used for the extraction of silver and gold from their ores...

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  15. In the extraction of iron, acts as a reducing agent in the upper regi...

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  16. In the Ellingham diagram, since the (Cr, Cr(2),O(3)) line lies the (A...

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  17. The alloy steel used for making permanent magnet is .

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  18. Al(2)O(3) is used in chromatography.

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  19. The reduction of a metal oxide is easier if the metal is formed in the...

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  20. The protect various articles of iron from rusting, they are coated wit...

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