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Give the names of the four most abundant...

Give the names of the four most abundant elements in the earth's crust? Arrange them in decreasing abundance.

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For most abundant elements in the earth's crust are: oxygen, silicon, aluminimum and iron. Abundance order: Oxygen`gt`Silicon`gt`Aluminium`gt`Iron.
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CENGAGE CHEMISTRY ENGLISH-APPENDIX INORGANIC VOLUME 2-Short Answer Type
  1. Which metals are generally extracted by the electrolytic processes ? W...

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  2. What type of ores are roasted?

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  3. Give the names of the four most abundant elements in the earth's crust...

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  4. What is a mineral? How does it differ from an ore?

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  5. Why do some metals occur in the native state?

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  6. Name the method used for refining of : (a). Zirconium. (b). Nickel...

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  7. Can iron be purified by amalgamation?

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  8. Both iron and aluminium combine slowly with oxygen at room temperature...

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  9. What is the name given to solid phase of earth?

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  10. Give one example where hydrometallurgy is used for metal extraction?

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  11. Name the method of metal refining which is generally used when a metal...

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  12. When is electrolytic reduction applied for getting a metal?

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  13. What name is given to carbon reduction process for extracting the meta...

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  14. An ore has impurities which are attracted by magnet suggest process fo...

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  15. In moist air, copper corrodes to produce a green layer on the surface....

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  16. The value ofDelta (f) G^(Ө) for formation of Cr(2) O(3) is – 540 kJmo...

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  17. What do you understand by roasting in presence of NaCl?

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  18. Why NF3 cannot be hydrolysed, while NCl3 can be readily hydrolysed?

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  19. Why NI5 does not exist While PCl5 exists?

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  20. Why the boiling point of ammonia is greater than phosphine?

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