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The difference (s) between roasting and ...

The difference (s) between roasting and calcination is / are :

A

roasting is highly endothermic while calcination is not

B

partial fusion occurs in calcination but not in roasting

C

calcination is performed in limited amount of air but roasting employs excess air

D

combustion reaction occur in roasting but not in calcination

Text Solution

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The correct Answer is:
C, D
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VK JAISWAL ENGLISH-METALLURGY-One OR MORE ANSWERS IS/ ARE CORRECT
  1. Amphoteric nature of aluminium is employed in which of the following p...

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  2. Which of the following is true for calcination of metal ore ?

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  3. The difference (s) between roasting and calcination is / are :

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  4. The etraction of metals from oxide ores involves

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  5. Metals which can be extracted by smelting process are :

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  6. Of the following reduction processes, correct processes are :

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  7. In the extraction of aluminium metal, one of the process is summarised...

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  8. During the production of iron and steel.

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  9. The smelting of iron in a blast furnace involves the following process...

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  10. For which of the following metals can be extracted by aluminothermic p...

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  11. For which of the following metal, the carbon reduction cannot be used ...

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  12. The advantage(s) of using carbon to reduce a number of oxides and othe...

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  13. The disadvantage of carbon reduction method are :

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  14. Which of the following metal (s) is /are commercially extracted by sel...

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  15. Which of the following is / are correctly matched ?

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  16. The funciton of adding cryolite in the electrolytic reduction of alumi...

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  17. Which of the following reduction reactions are actually employed in co...

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  18. The main reaction occuring in blast furnance during extraction of iron...

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  19. Which of the following are true for electrolytic extraction of alumini...

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  20. Select correct statement regarding silver extraction process .

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