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Which of the following reactions occur d...

Which of the following reactions occur during calcination?

A

`CaCO_3 rarr CaO + CO_2`

B

`2 FeS_2+ 11/2 O_2 rarr Fe_2O_3+ 4SO_2`

C

`Al_2O_3. x H_2O rarr Al_2O_3+x H_2O`

D

`ZnS +2/3 O_2 rarr ZnO +SO_2`

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Common impurities present in bauxite are .

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  2. Which of the following ores are concentrated by froth floation ?

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  3. Which of the following reactions occur during calcination?

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  4. For the metallurgical process of the ores calcined ore can be reduced ...

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  5. The main reactions occurring in blast furnace during extraction of iro...

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  6. In which of the following method of purification, metal is converted t...

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  7. Which of the following statements are correct ?

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  8. Give the preparation of chlorine.

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  9. Match the items of Column I with items of Column II and assign the cor...

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  10. Match the items of Column I with items of Column II and assign the cor...

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  11. Match items of Column I with the items of Column II and assign the cor...

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  12. Match items of Column I with the items of Column II and assign the cor...

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  13. Match items of Column I with the items of Column II and assign the cor...

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  14. In the following questions a statement of assertion followed by a stat...

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  15. Assertion : Zirconium can be purified by Van Arkel method. Reason : ...

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  16. Assertion : Sulphide ores are concentrated by Froth Flotation method. ...

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  17. Assertion : Zone refining method is very useful for producing semicond...

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  18. Assertion : Hydrometallurgy involves dissolving the ore in a suitable ...

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  19. Why is pine oil used in froth floatation method?

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  20. Which is better reducing agent at temperature 983 K, C or Co?

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