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Prudict the mode of occurrence of the fo...

Prudict the mode of occurrence of the following metals. (i) Highly reactive (eg, sodium) (ii) Moderately reactive (such as iron) (iii) Noble metal. (Au, Pt)

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(i) Thighly reáctive (ie, Na) Highly.reactive metals occur in combined state genecally as their chlorides, sulphates or carbonates. (ii) Moderately reactive metals.generally occur as their oxides (iii). Noble metals exist in free state or native state.
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V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
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  11. The impurities associated with the ore after mining are collectively c...

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  12. In which of the folllowing minerals, aluminium is not present?

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  13. The process in which metal oxide is reduced to metal by Al is called

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  14. During smelting, the additional substance added, which combines with i...

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  15. An ore after levigation is found to have acidic impurities. Which of t...

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  16. Which of the following metals is. ieached by cyanide process

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  17. Which of the following metals can be extracted by smelting

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  18. Alkalt metáls do not exist in free state in niature because. these are

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  19. Smelting involves reduction of metal oxide with

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  20. Heating pyrites to remove sulphur is called

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