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Which of the following reaction is not i...

Which of the following reaction is not involved in thermite process?

A

`3Mn_(3)O_(4) + 8Al rarr 9Mn + 4Al_(2)O_(3)`

B

`Cr_(2)O_(3) +2Al rarr Al_(2)O_(3) + 2Cr.`

C

`2Fe + Al_(2)O_(3) rarr 3Al + Fe_(2)O_(3)`

D

`B_(2)O_(3) + 2Al rarr 2B + Al_(2)O_(3)`

Text Solution

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The correct Answer is:
A, B
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NARAYNA-METTALURGY-MULTIPLE ANSWER QUESTOINS
  1. Roasting is carried out to :

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  2. Select the correct statements (s) :

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  3. Which of the following reaction is not involved in thermite process?

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  4. Why lime stone is added in the extraction of lead from galena?

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  5. Amphoteric nature of aluminium is employed in which of the following p...

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  6. The major role of flourspar, CaF(2) which is added in small amount in ...

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  7. Which of the following statement is/are not correct ?

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  8. Bessemerisation is carried out for

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  9. Which of the following statements are correct in connection with the e...

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  10. During the extraction of Ag and using a KCN solution and Zn, cyanide i...

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  11. Which of the following are correctly matched?

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  12. Which of the following statements are correct ?

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  13. Which of the following statement is/are correct?

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  14. Point out the incorrect statement among the following?

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  15. Which of the following process makes direct use of oxygen ?

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  16. In the extraction of chlorine from brine

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

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  18. In which of the following pair(s) the minerals are converted in to met...

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  19. The reaction (s) which does (do) not occur in the reduction zone in th...

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  20. Cassiterite ore (SnO(2)) is purified by

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