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Which of the following reaction occur du...

Which of the following reaction occur during calcination ?

A

` Ca CO _ 3 to Ca O + CO _ 2 `

B

` 2 Fe S_ 2 + (1)/(2) O _ 2 to Fe _ 2 O _ 3 + 4 SO _ 2 `

C

` Al _ 2 O _ 3 x H _ 2 O to Al _ 2 O _ 3 + x H _ 2 O `

D

` ZnS + (3)/(2) O _2 to ZnO + SO _ 2 `

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The correct Answer is:
A, C
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PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS - II )
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  3. Which of the following reaction occur during calcination ?

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

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  9. At temperature above 1073K coke can be used to reduce FeO to Fe. How c...

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  10. Wrought iron is the purest form of iron. Write a reaction used for the...

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  11. How is copper extracted from low grade copper ores?

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  12. Write two basic requirements for refining of a metal by Mond process a...

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  13. Although carbon and hydrogen are better reducing agents but they are n...

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  14. How do we separate two sulphide ores by Froth Floatation Method? Expla...

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  15. The purest form of iron is prepared by oxidising impurities from cast ...

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  16. The mixture of compounds A and B is passed through a column of Al(2)O(...

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  17. Why is sulphide ore of copper heated in a furnace afer mixing with sil...

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  18. Why are sulphide ores converted to oxide before reduction?

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