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Heating pyrites to remove sulphur is cal...

Heating pyrites to remove sulphur is called

A

Smelting

B

Calcination

C

Liquation

D

Roasting

Text Solution

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The correct Answer is:
D
Heating pyrites to remove sulphur is called roasting.
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DINESH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS.
  1. Flux is used to

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  2. Which one of the following elements does not exist in the native form ...

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  3. Heating pyrites to remove sulphur is called

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  4. Nickel is purified by thermal decomposition of its

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  5. The most electropositive metals are isolated from their ores by

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  6. The most abundant element in the earth's crust (by weight) is

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

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  8. Match List I with List II and select the correct answer using the cod...

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  9. The metal always found in the free state is

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  10. Electromagnetic seperation is used in the concentration of

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  11. Which of the flowing metal is extracted by the electrometallurigical m...

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  12. For which ore of the metal, froth floatation method is used for concen...

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  13. Which of the following metal is leached by cyanide process ?

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  14. Pyrolusite is a/an

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  15. The common method of extraction of metals from oxide ores is

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  16. Which one of the following ores is not concentrated by froth floatatio...

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  17. Sulphide ores are generally concentrated by

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  18. The metal which cannot be obtained by electrolysis of aqueous solution...

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  19. The least stable oxide at room temperature is

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  20. What is insoluble in water ?

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