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Calcination is used in matallurgy for re...

Calcination is used in matallurgy for removal of

A

moisture

B

water and `CO_2`

C

` CO_2 and H_2 S`

D

` H_2 O and H_ 2S`

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The correct Answer is:
B
Calcination decomposes carbonates into their respective oxides and used for removal of volatile impurities like `H_2 O ` and ` CO_2`
` Al_2 O_3 . 2H_2 O overset(Delta ) to al_2 O_3 + 2H_2 O`
` CaCO_3 overset(Delta) to CaO +CO_2`
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DISHA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE -1: CONCEPT BUILDER (TOPICWISE)
  1. Before introducing FeO in blast furance, it is converted to Fe(2)O(3) ...

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  2. Electrolytic reduction method is used fro the extraction of

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  3. Calcination is used in matallurgy for removal of

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  4. Heating of pyrites in air for oxidation of sulphur is called

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  5. Which one of the furnaces among the following can produce the highest ...

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  6. Furances are lined with calcium oxide as

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  7. Roasting is generally done in case of the

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  8. Aluminothermic process is used for the extraction of metals, whose oxi...

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  9. Frothers (used in Froth floatation process) are

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  10. Identify x,y,z for the following metallurgical process : metal sulph...

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  11. The process of converting hydrated alumina into anhydrous alumina is c...

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  12. Furances are lined with calcium oxide as

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  13. The substance used in the thermite process of reducing metal ores is

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  14. After partial roasting, the sulphide of copper is reduced by

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  15. Before introducing FeO in blast furance, it is converted to Fe(2)O(3) ...

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  16. ELLINGHAM DIAGRAM

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  17. The form of iron obtained from blast furnace is:

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  18. The slag obtained during the extraction of copper from coper pyrites i...

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  19. Muffle furnace is used in the metallurgy of

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  20. In Hall's process, the main reagent is mixed with

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